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NOTICE OF INCORPORATION 

United States Legal Document 

$3T All citizens and residents are hereby advised that 
this is a legally binding document duly incorporated by 
reference and that failure to comply with such 
requirements as hereby detailed within may subject you 
to criminal or civil penalties under the law. Ignorance of 
the law shall not excuse noncompliance and it is the 
responsibility of the citizens to inform themselves as to 
the laws that are enacted in the United States of America 
and in the states and cities contained therein. ~^k 

* * 



IAPMO UPC (1997), Uniform Plumbing Code, as 
adopted and incorporated by the States and 
Municipalities, including Douglas County 
(Kansas) in the Douglas County Code, Chapter 3, 
Article 3. 



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UNIFORM 

PLUMBING 

CODE™ 




1997 EDITION 



Adopted at the Sixty-Seventh Annual Conference 
September, 1996 



International Association of Plumbing and Mechanical Officials 
A Nonprofit Association 



Copyright ©1996 
by 

International Association of Plumbing and Mechanical Officials 

All Rights Reserved 



No part of this work may be reproduced or recorded in any form or by any means, except as may be expressly 
permitted in writing by the publisher. 

Twenty- First Edition 

First Printing, November 1996 

Second Printing, March 1998 

Third Printing, August 1998 

Fourth Printing, August 1999 

Fifth Printing, April 2004 

Sixth Printing, June 2005 

ISSN 0733-2335 

Published by the International Association of Plumbing and Mechanical Officials 
5001 E. Philadelphia Street, Ontario, CA 91761-2816 



FOREWORD 



The advantages of a uniform plumbing code adopted 
by various local jurisdictions have long been 
recognized. Disorder in the industry as a result of 
widely divergent plumbing practices and the use of 
many different, often conflicting, plumbing codes by 
local jurisdictions influenced the Western Plumbing 
Officials Association (now the International 
Association of Plumbing and Mechanical Officials 
[IAPMO]) to form a committee of plumbing 
inspectors, master and journeyman plumbers, 
sanitary and mechanical engineers, assisted by 
public utility companies, and the plumbing industry to 
create a basic plumbing document for general use. 
The product of this effort, the first edition of the 
Uniform Plumbing Code™ (UPC™) was officially 
adopted by IAPMO in 1945. The widespread use of 
this code over the past five decades by jurisdictions 
throughout the United States is testimony to its merit. 

With the publication of this 1997 edition of the 
UPC, a significant milestone has been reached. For 
the first time in history, a plumbing code has been 
created which is the result of a collaboration of 
industry-wide entities. The National Association of 
Plumbing-Heating-Cooling Contractors (NAPHCC) 
and the Mechanical Contractors Association of 
America (MCAA) joined forces with IAPMO to create 
this amalgamation of the most desirable aspects of 
the three most respected plumbing codes in 
existence. The 1994 Uniform Plumbing Code 
published by IAPMO, the 1993 ANSI A40 Safety 
Requirements for Plumbing™ published by the 
MCAA and NAPHCC Joint Task Force, and the 
National Standard Plumbing Code™ published by 
NAPHCC were scrupulously dissected and 
reassembled into this, the finest plumbing code 
document ever published. 

The memberships of the three aforementioned 
associations are composed of representatives of all 
facets of the plumbing industry. They include 



plumbing contractors, installers, inspectors, building 
officials, engineers, architects, designers, 
manufacturers, wholesalers and consumers. 

The UPC is designed to provide consumers with 
safe and sanitary plumbing systems, while, at the 
same time, allowing latitude for innovation and new 
technologies. The users of the UPC are continuously 
encouraged to update and to submit changes to 
improve the code. Amendments adopted by the 
IAPMO membership are incorporated into the code, 
which is published every three years. It is this 
process that keeps the code current with the latest 
technological advances in the industry. 

The 1997 edition of the UPC is organized in the 
"common code format." This format standardizes the 
organization of the major model plumbing codes 
throughout the United States, so that topics are 
arranged in the same order in all of the plumbing 
codes. For example, information on plumbing vents 
is found in Chapter 9 in each of the plumbing codes. 
This new format is intended to be more "user 
friendly" for designers, inspectors, plumbers and 
manufacturers working with several codes at the 
local, national and international levels. 

The Uniform Plumbing Code is dedicated to all 
those who, in working to achieve "the ultimate 
plumbing code," have unselfishly devoted their time, 
effort, and personal funds to create and maintain 
this, the finest plumbing code in existence. 

The 1997 Uniform Plumbing Code is sponsored 
by NAPHCC and MCAA. The presence of the logos 
of NAPHCC and MCAA, while reflecting support, 
does not imply any ownership of the copyright to the 
UPC which is held exclusively by IAPMO. NAPHCC 
may be contacted at P.O. Box 6808, Falls Church, 
Virginia 22046, 800-533-7694. MCAA may be 
contacted at 1385 Piccard Drive, Rockville, Maryland 
20850,301-869-5800. 



Code changes made to the original amalgamated code are marked in the 
margins as follows. 

^— An arrow denotes a deletion | A vertical line denotes a change 



TABLE OF CONTENTS 

Foreword iii 

Related Publications and Services v 

Membership in IAPMO vii 

Organization of IAPMO vii 

UPC Code Change Cycle vii 

How to Contact IAPMO vii 

Sample Ordinance for Adopting the 1997 UPC viii 

Chapter 1 — Administration 1 

Chapter 2 — Definitions 9 

Chapter 3 — General Regulations 17 

Chapter 4 — Plumbing Fixtures and Fixture Fittings 25 

Chapter 5 — Water Heaters 35 

Chapter 6 — Water Supply and Distribution 45 

Chapter 7 — Sanitary Drainage 59 

Chapter 8 — Indirect Wastes 71 

Chapter 9 — Vents 75 

Chapter 10 — Traps and Interceptors 79 

Chapter 11 — Storm Drainage 85 

Chapter 12 - Fuel Piping 97 

Chapter 13 — Medical Gas Systems 119 

Chapter 14 — Mandatory Referenced Standards 129 

Appendix A — Recommended Rules for Sizing the Water Supply System 167 

Appendix B — Explanatory Notes on Combination Waste and Vent Systems 183 

Appendix C — Additional Referenced Standards 185 

Appendix D — Sizing Stormwater Drainage Systems 189 

Appendix E — Manufactured/Mobile Home Parks and Recreational Vehicle Parks 197 

Appendix F — Reserved 

Appendix G — Graywater Systems for Single Family Dwellings 205 

Appendix H — Recommended Procedures for Design, Construction and Installation of 

Commercial Kitchen Grease Interceptors 215 

Appendix I — Installation Standards 219 

Appendix J — Reclaimed Water Systems for Non-Residential Buildings 313 

Appendix K — Private Sewage Disposal Systems 317 

Appendix L — Alternate Plumbing Systems 329 

Useful Tables 333 

Index 341 



IV 



RELATED PUBLICATIONS AND SERVICES 

IAPMO provides a variety of other products which are useful for inspectors, building officials, architects, 
engineers, manufacturers, contractors, plumbers, and apprentices. 

IAPMO Order Desk 

5001 E. Philadelphia Street 

Ontario, CA 91761-2816 

Phone: 909-472-4208, Fax: 909-472-4246 

For Publications Orders: 800-85-IAPMO 

Uniform Plumbing Code — Spanish Edition: 

This UPC will assist the Spanish-speaking community in its utilization of the most widely adopted plumbing 
code in the world. The UPC was translated in response to numerous requests from jurisdictions 
throughout the US with large Spanish-speaking populations. 

Uniform Plumbing Code Interpretations Manual: 

This increasingly popular manual is the result of ongoing work by lAPMO's Code Interpretations 
Committee. Updated annually, it contains hundreds of questions and answers. Many of these questions 
arise in the daily administration and enforcement of the code. Interpretation requests are accepted from 
active IAPMO members. Interpretation Request Forms are available in Official magazine or from IAPMO. 

Uniform Plumbing Code Illustrated Training Manual: 

The UPC Illustrated Training Manual is an excellent reference for anyone involved in the plumbing 
industry. It has an extensive definitions section and several hundred comprehensive technical diagrams 
and illustrations. It serves as a textbook, and it also is useful as a valuable tool for explaining the intent 
and use of the Code. 

Uniform Plumbing Code Study Guide: 

This book is the perfect complement to the UPC Illustrated Training Manual. Alone, it constitutes a complete 
chapter-by-chapter self-study course for learning the UPC. It has hundreds of questions, general practice 
exams, a section on plumbing math, numerous pipe sizing exercises, and a section on fitting identification. 
The questions and answers in the UPC Study Guide are kept current by lAPMO's Education Committee. 

Dwelling Requirements of the Uniform Plumbing Code: 

This books contains the UPC requirements which apply to one and two family dwellings only. Its illustrations 
and photographs make it especially useful for combination dwelling inspectors and the do-it-yourselfer. 

Cumulative Analysis of Uniform Plumbing Code Changes: 

An excellent reference for learning and understanding plumbing code changes adopted at the Annual 
Education and Business Conferences. It is also useful for parties preparing proposed code changes. 

Uniform Mechanical Code 

The Uniform Mechanical Code contains complete requirements for the installation and maintenance of 
heating, ventilating, cooling, and refrigeration systems. 

Uniform Mechanical Code Study Guide: 

Similar in design to the Uniform Plumbing Code Study Guide, the Uniform Mechanical Code Study Guide 
covers all aspects of the UMC in detail. 

Handbook to the Uniform Mechanical Code 

An indispensable tool for understanding the provisions of the Uniform Mechanical Code. 

Uniform Solar Energy Code: 

Provides a complete set of regulations for the use of solar energy in both plumbing and mechanical systems. 

Uniform Swimming Pool, Spa, and Hot Tub Code: 

Contains complete and current guidelines for piping systems serving these increasingly popular amenities. 



IAPMO Installation Standards: 

IAPMO standards committees have formulated installation standards for a wide variety of commonly used 
plumbing materials and systems. The IAPMO installation standards are included after the text of the 
Uniform Plumbing Code. Separate printed copies are also available. 

Material and Property Standards: 

Although IAPMO does not generally develop material and property standards, when it becomes apparent 
that necessary standards are nonexistent, IAPMO has exercised leadership by developing them. lAPMO's 
standards are always subject to modifications and improvements, and are withdrawn when acceptable 
nationally-recognized consensus standards are formulated. 

Manufactured Home and Recreational Vehicle Standards: 

Similar to the material and property standards, IAPMO has developed a number of standards for specialty 
products used in manufactured homes and recreational vehicles. These standards are available 
individually, or they may be purchased as a set. 

ANSI 2 124 Standards: 

These standards are written to specifically address a variety of plastic plumbing fixtures and components. 
They are available individually, or may be grouped for quantity discounts. 

Directory of Listed Plumbing Products: 

The IAPMO Listing Program was primarily created to benefit the building and plumbing officials in the 
growing number of jurisdictions that adopt and use the UPC. For a product to be listed by IAPMO, it must 
be found to be in conformance with an accepted standard or criteria and must not be in conflict with the 
UPC. IAPMO administers a listing compliance program with unannounced inspections of manufacturing 
facilities, conducted to verify compliance with listing requirements. 

This directory contains information on several thousand lAPMO-listed plumbing products and is 
updated monthly. 

Directory of Listed Plumbing Products for Manufactured Housing and Recreational Vehicles: 

This directory contains information on several hundred lAPMO-listed plumbing products used in 
manufactured housing and recreational vehicles and is updated bi-monthly. 

Directory of Water Conserving Plumbing Products: 

Includes all water conserving lAPMO-listed water closets, faucets, urinals and retrofitted flushing devices. 
Figures for gallons per flush or gallons per minute are included for each item. Updated monthly. 

Official Magazine: 

lAPMO's bimonthly publication features informative articles on plumbing, local chapter proceedings and 
events, and plumbing industry updates. All IAPMO members receive a free subscription. 

Drain Waste and Vent Calculator: 

This calculator provides quick and simple access to the fixture unit and sizing tables of Chapter 7 of the UPC. 

Water Sizing Calculator: 

Sizing water systems becomes a much simpler task with the use of this handy calculator. 

Natural Gas Pipe Sizing Calculator: 

Designed for systems with a supply pressure of six to eight inches of water column, all pipe capacities are 
given in cubic feet per hour. 

Pipe Sizing Computer Software from IAPMO: 

Programs are available for sizing drain, waste, and vent pipe, water piping systems, and gas piping 
systems. 

Uniform Plumbing Code Computer Reference: 

If you use the 1997 UPC, this easy-to-use computer program will save you lots of time and effort. You can 
look up any word, partial word, or groups of words in the UPC almost instantly. The program shows the full 
text of Chapters 1-14. After a word search, print out a complete list of locations where the word is found in 
the UPC and then print out the text of any given section. 

vi 



MEMBERSHIP IN IAPMO 

IAPMO is an open association. Membership categories have annual dues from $10.00 to $350.00. Member 
benefits include discounted prices on most IAPMO publications, a subscription to Official magazine, and the 
opportunity to participate in updating and improving the most comprehensive plumbing code available. 

Some membership categories include additional benefits. For additional information, contact lAPMO's 
Membership Department. 

ORGANIZATION OF IAPMO 

IAPMO is a nonprofit association governed by a Board of Directors, consisting of a President, Vice President, 
Immediate Past President, and nine Directors. The Board of Directors is elected by the active members at the 
Annual Education and Business Conference. The President and Vice President serve one year terms. The 
Directors serve for three years. A Secretary and Treasurer are appointed annually from the active membership 
by the Board of Directors. 

The daily business of the association is conducted by lAPMO's staff, in coordination with lAPMO's 
standing and ad hoc committees. 

UPC CODE CHANGE CYCLE 

The UPC is published every three years. Any interested party may submit code changes. Proposed changes 
must be submitted on forms supplied by IAPMO. Code changes submitted by March 1st of each year are sent 
to lAPMO's Code Changes Committee for initial discussion and recommendation. They are then again 
debated, with final action being decided by vote of the active members in attendance at the Annual Education 
and Business Conference, which is held in various cities throughout the United States. 

Amendments adopted at the 1997, 1998 and 1999 conferences will be incorporated into the 2000 edition 
of the UPC. 

HOW TO CONTACT IAPMO 

Mailing Address: Phone Numbers: Office Hours: 

5001 E. Philadelphia Street 909-472-4100 Monday through Friday 

Ontario, CA 91 761 -281 6 Fax: 909-472-41 50 8:00 am to 5:00 pm Pacific time 

Publications orders: Closed weekends and holidays 

1-800-85-IAPMO 



VII 



Sample Ordinance for Adoption of the 1997 Uniform Plumbing Code 

Ordinance No. 

An ordinance of the (jurisdiction) adopting the 1997 edition of the "Uniform Plumbing Code", including 
IAPMO Installations Standards contained in Appendix I, regulating and controlling the design, construction, 
quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or 
maintenance of any plumbing system in the (jurisdiction) : providing for the issuance of permits and 

collection of fees therefore; repealing Ordinance No. of the (jurisdiction) and all other ordinances 

and parts of the ordinances in conflict therewith. 

The ( governing body) of the (jurisdiction) does ordain as follows: 

Section 1. That certain documents, three (3) copies of which are on file in the office of the (jurisdiction's 
keeper of records) and the (jurisdiction) , being marked and designated as "Uniform Plumbing Code", 

(including Appendix chapters (fill in the applicable Appendix chapters) be and are hereby adopted as the 

code of the (jurisdiction) for regulating the design, construction, quality of materials, erection, installation, 
alteration, repair, location, relocation, replacement, addition to, use or maintenance of plumbing systems in the 
(jurisdiction) providing for the issuance of permits and collection of fees therefore; and each and all of the 
regulations, provisions, conditions and terms of such "Uniform Plumbing Code", 1997 edition, and Appendix I 
published by the International Association of Plumbing and Mechanical Officials, on file in the office of the 
(jurisdiction) are hereby referred to, adopted and made a part hereof as if fully set out in this ordinance. 

Section 2. (Incorporate penalties for violations. See Section 102.3.2.) 

Section 3. That Ordinance No. of (jurisdiction^ entitled (fill in here the complete title of the present 

plumbing ordinance or ordinances in effect at the present time so that they will be repealed by definite 
mention) and all other ordinances or parts of ordinances in conflict herewith are hereby repealed. 

Section 4. That if any section, subsection, sentence, clause or phrase of this ordinance is, for any reason, held 
to be unconstitutional, such decision shall not affect the validity of the remaining portions of this ordinance. The 
( governing body) hereby declares that it would have passed this ordinance, each section, subsection, clause 
or phrase thereof, irrespective of the fact that any one or more sections, subsections, sentences, clauses and 
phrases be declared unconstitutional. 

Section 5. That the (jurisdiction's keeper of records! is hereby ordered and directed to cause this 
ordinance to be published. (An additional provision may be required to direct the number of times the 
ordinance is to be published and to specify that it is to be in a newspaper in general circulation. Posting may 
also be required.) 

Section 6. That this ordinance and the rules, regulations, provisions, requirements, orders and matters 
established and adopted hereby shall take effect and be in full force and effect (time period) from and 
after the date of its final passage and adoption. 



VIII 



CHAPTER 1 

ADMINISTRATION 



101.0 Title, Scope and General 

101.1 Title 

This document shall be known as the "Uniform 
Plumbing Code/' may be cited as such, and will be 
referred to herein as "this Code/' 

101.2 Purpose 

This Code is an ordinance providing minimum 
requirements and standards for the protection of the 
public health, safety, and welfare. 

101.3 Plans Required 

The Administrative Authority may require the 
submission of plans, specifications, drawings, and 
such other information as the Administrative 
Authority may deem necessary, prior to the 
commencement of, and at any time during the 
progress of any work regulated by this Code. 

The issuance of a permit upon plans and 
specifications shall not prevent the Administrative 
Authority from thereafter requiring the correction of 
errors in said plans and specifications or from 
preventing construction operations being carried on 
thereunder when in violation of this Code or of any 
other pertinent ordinance or from revoking any 
certificate of approval when issued in error. 

101.4 Scope 

101.4.1 The provisions of this Code shall apply 
to the erection, installation, alteration, repair, 
relocation, replacement, addition to, use or 
maintenance of plumbing systems within this 
jurisdiction. 

101.4.1.1 Repairs and Alterations 

101.4.1.1.1 In existing buildings or 
premises in which plumbing 
installations are to be altered, repaired, 
or renovated, deviations from the 
provisions of this Code are permitted, 
provided such deviations are found to 
be necessary and are first approved by 
the Administrative Authority. 

101.4.1.1.2 Existing building sewers 
and building drains may be used in 
connection with new buildings or new 
plumbing and drainage work only 
when they are found on examination 
and test to conform in all respects to the 
requirements governing new work, and 
the proper Administrative Authority 
shall notify the owner to make any 



changes necessary to conform to this 
Code. No building or part thereof, shall 
be erected or placed over any part of a 
drainage system which is constructed of 
materials other than those approved 
elsewhere in this Code for use under or 
within a building. 

101.4.1.1.3 All openings into a 
drainage or vent system, excepting 
those openings to which plumbing 
fixtures are properly connected or 
which constitute vent terminals, shall be 
permanently plugged or capped in an 
approved manner, using the 
appropriate materials required by this 
Code. 

1 01 .4.1 .2 Maintenance. The plumbing and 
drainage system of any premises under the 
jurisdiction of the Administrative Authority 
shall be maintained in a sanitary and safe 
operating condition by the owner or the 
owner's agent. 

101.4.1.3 Existing Construction. No 
provision of this Code shall be deemed to 
require a change in any portion of a 
plumbing or drainage system or any other 
work regulated by this Code in or on an 
existing building or lot when such work was 
installed and is maintained in accordance 
with law in effect prior to the effective date 
of this Code, except when any such 
plumbing or drainage system or other work 
regulated by this Code is determined by the 
Administrative Authority to be in fact 
dangerous, unsafe, insanitary, or a nuisance 
and a menace to life, health, or property. 

101.4.1.4 Conflicts Between Codes. 
When the requirements within the 
jurisdiction of this plumbing code conflict 
with the requirements of the mechanical 
code, this code shall prevail. 

101.4.2 Additions, alterations, repairs and 
replacement of plumbing systems shall comply 
with the provisions for new systems except as 
otherwise provided in Section 101.5. 

1 01 .4.3 The provisions in the appendices are 
intended to supplement the requirements of this 
Code and shall not be considered part of this 
Code unless formally adopted as such. 



101.5-102.2 



UNIFORM PLUMBING CODE 



101.5 Application to Existing Plumbing System 

101.5.1 Additions, Alterations or Repairs. 

Additions, alterations or repairs may be made to 
any plumbing system without requiring the 
existing plumbing system to comply with all the 
requirements of this Code, provided the 
addition, alteration or repair conforms to that 
required for a new plumbing system. Additions, 
alterations or repairs shall not cause an existing 
system to become unsafe, insanitary or 
overloaded. 

101.5.2 Health and Safety. Whenever 
compliance with all the provisions of this Code 
fails to eliminate or alleviate a nuisance, or any 
other dangerous or insanitary condition which 
may involve health or safety hazards, the owner 
or the owner's agent shall install such additional 
plumbing and drainage facilities or shall make 
such repairs or alterations as may be ordered by 
the Administrative Authority. 

101.5.3 Existing Installation. Plumbing 
systems lawfully in existence at the time of the 
adoption of this Code may have their use, 
maintenance or repair continued if the use, 
maintenance or repair is in accordance with the 
original design and location and no hazard to 
life, health or property has been created by such 
plumbing system. 

101.5.4 Changes in Building Occupancy. 

Plumbing systems which are a part of any 
building or structure undergoing a change in use 
or occupancy, as defined in the Building Code, 
shall comply to all requirements of this Code 
which may be applicable to the new use or 
occupancy. 

101.5.5 Maintenance. All plumbing systems, 
materials and appurtenances, both existing and 
new, and all parts thereof shall be maintained in 
proper operating condition. All devices or 
safeguards required by this Code shall be 
maintained in conformance with the Code 
edition under which installed. The owner or the 
owner's designated agent shall be responsible 
for maintenance of plumbing systems. To 
determine compliance with this subsection, the 
Administrative Authority may cause any 
plumbing system to be reinspected. 

101.5.6 Moved Buildings. Plumbing systems 
which are part of buildings or structures moved 
into this jurisdiction shall comply with the 
provisions of this Code for new installations 

| except as provided for in Section 103.5.5.2. 



102.0 Organization and Enforcement 

102.1 Administrative Authority 

The Administrative Authority shall be the Authority 
duly appointed to enforce this Code. 

102.2 Duties and Powers of the Administrative 
Authority 

102.2.1 The Administrative Authority may 
appoint such assistants, deputies, inspectors, or 
other employees as are necessary to carry out the 
functions of the department and this Code. 

102.2.2 Right of Entry. Whenever it is 
necessary to make an inspection to enforce the 
provisions of this Code, or whenever the 
Administrative Authority has reasonable cause 
to believe that there exists in any building or 
upon any premises, any condition or violation of 
this Code which make the building or premises 
unsafe, insanitary, dangerous or hazardous, the 
Administrative Authority may enter the building 
or premises at all reasonable times to inspect or 
to perform the duties imposed upon the 
Administrative Authority by this Code, provided 
that if such building or premises is occupied, the 
Administrative Authority shall present 
credentials to the occupant and request entry. If 
such building or premises is unoccupied, the 
Administrative Authority shall first make a 
reasonable effort to locate the owner or other 
person having charge or control of the building 
or premises and request entry. If entry is refused, 
the Administrative Authority has recourse to 
every remedy provided by law to secure entry. 

When the Administrative Authority shall 
have first obtained a proper inspection warrant 
or other remedy provided by law to secure 
entry, no owner, occupant, or person having 
charge, care, or control of any building or 
premises shall fail or neglect, after proper 
request is made as herein provided, to promptly 
permit entry herein by the Administrative 
Authority for the purpose of inspection and 
examination pursuant to this Code. 

102.2.3 Stop Orders. Whenever any work is 
being done contrary to the provisions of this 
Code, the Administrative Authority may order 
the work stopped by notice in writing served on 
any persons engaged in the doing or causing 
such work to be done, and any such persons 
shall forthwith stop work until authorized by 
the Administrative Authority to proceed with 
the work. 

102.2.4 Authority to Disconnect Utilities in 
Emergencies. The Administrative Authority 
shall have the authority to disconnect a 



ADMINISTRATION 



102.2-103.2 



plumbing system to a building, structure or 
equipment regulated by this Code in case of 
emergency where necessary to eliminate an 
immediate hazard to life or property. 

102.2.5 Authority to Condemn. Whenever the 
Administrative Authority ascertains that any 
plumbing system or portion thereof, regulated 
by this Code, has become hazardous to life, 
health, property, or has become insanitary, the 
Administrative Authority shall order in writing 
that such plumbing either be removed or placed 
in a safe or sanitary condition, as appropriate. 
The order shall fix a reasonable time limit for 
compliance. No person shall use or maintain 
defective plumbing after receiving such notice. 

When such plumbing system is to be 
disconnected, written notice shall be given. In 
cases of immediate danger to life or property, 
such disconnection may be made immediately 
without such notice. 

102.2.6 Liability. The Administrative Authority 
charged with the enforcement of this Code, 
acting in good faith and without malice in the 
discharge of the Administrative Authority's 
duties, shall not thereby be rendered personally 
liable for any damage that may accrue to persons 
or property as a result of any act or by reason of 
any act or omission in the discharge of duties. A 
suit brought against the Administrative 
Authority or employee because of such act or 
omission performed in the enforcement of any 
provision of this Code shall be defended by legal 
counsel provided by this jurisdiction until final 
termination of such proceedings. 

102.3 Violations and Penalties 

102.3.1 Violations. It shall be unlawful for any 
person, firm or corporation to erect, construct, 
enlarge, alter, repair, move, improve, remove, 
convert, demolish, equip, use, or maintain any 
plumbing or permit the same to be done in 
violation of this Code. 

102.3.2 Penalties. Any person, firm, or 
corporation violating any provision of this Code 
shall be deemed guilty of a misdemeanor, and 
upon conviction thereof, shall be punishable by 
a fine and /or imprisonment set forth by the 
governing laws of the jurisdiction. Each separate 
day or any portion thereof, during which any 
violation of this Code occurs or continues, shall 
be deemed to constitute a separate offense. 

103.0 Permits and Inspections 

103.1 Permits 

103.1.1 Permits Required. It shall be unlawful 



for any person, firm or corporation to make any 
installation, alteration, repair, replacement or 
remodel any plumbing system regulated by this 
Code except as permitted in Section 103.1.2, or to 
cause the same to be done without first 
obtaining a separate plumbing permit for each 
separate building or structure. 

103.1.2 Exempt Work. A permit will not be 
required for the following: 

103.1.2.1 The stopping of leaks in drains, 
soil, waste or vent pipe, provided, however, 
that should any concealed trap, drainpipe, 
soil, waste or vent pipe become defective 
and it becomes necessary to remove and 
replace the same with new material, the 
same shall be considered as new work and a 
permit shall be procured and inspection 
made as provided in this Code. 

103.1.2.2 The clearing of stoppages or the 
repairing of leaks in pipes, valves or 
fixtures, nor for the removal and 
reinstallation of water closets, provided 
such repairs do not involve or require the 
replacement or rearrangement of valve, 
pipes, or fixtures. 

Exemption from the permit 
requirements of this Code shall not be 
deemed to grant authorization for any work 
to be done in violation of the provisions of 
the Code or any other laws or ordinances of 
this jurisdiction. 

103.1.3 Licensing. It shall be the obligation of 
every person who enters into contracts for the 
installation or repair of plumbing systems 
covered by this code, for which a permit is 
required, to comply with state or local rules and 
regulations concerning licensing which the 
applicable governing authority has adopted. 

103.2 Application For Permit 

103.2.1 Application. To obtain a permit, the 
applicant shall first file an application therefor in 
writing on a form furnished by the 
Administrative Authority for that purpose. 
Every such application shall: 

103.2.1.1 Identify and describe the work to 
be covered by the permit for which 
application is made. 

103.2.1.2 Describe the land upon which the 
proposed work is to be done by legal 
description, street address or similar 
description that will readily identify and 
definitely locate the proposed building or 
work. 



103.2-103.3 



UNIFORM PLUMBING CODE 



103.2.1.3 Indicate the use or occupancy for 
which the proposed work is intended. 

103.2.1.4 Be accompanied by plans, 
diagrams, computations and other data as 
required in Section 103.2.2. 

103.2.1.5 Be signed by permittee or the 
permittee's authorized agent who may be 
required to submit evidence to indicate such 
authority. 

103.2.1.6 Give such other data and 
information as may be required by the 
Administrative Authority. 

103.2.2 Plans and Specifications. Plans, 
engineering calculations, diagrams and other 
data shall be submitted in one or more sets with 
each application for a permit. The Administrative 
Authority may require plans, computations and 
specifications to be prepared by and the 
plumbing designed by an engineer and /or 
architect licensed by the state to practice as such. 

Exception: The Administrative Authority 
may waive the submission of plans, 
calculations or other data if the 
Administrative Authority finds that the 
nature of the work applied for is such that 
reviewing of plans is not necessary to obtain 
compliance within the Code. 

103.2.3 Information on Plans and 
Specifications. Plans and specifications shall be 
drawn to scale upon substantial paper or cloth 
and shall be of sufficient clarity to indicate the 
location, nature and extent of the work proposed 
and show in detail that it will conform to the 
provisions of this Code and relevant laws, 
ordinances, rules and regulations. 

103.3 Permit Issuance 

103.3.1 Issuance. The application, plans and 
specifications and other data filed by an 
applicant for a permit shall be reviewed by the 
Administrative Authority. Such plans may be 
reviewed by other departments of this 
jurisdiction to verify compliance with applicable 
laws under their jurisdiction. If the 
Administrative Authority finds that the work 
described in an application for permit and the 
plans, specifications and other data filed 
therewith conform to the requirements of the 
code and other pertinent laws and ordinances, 
and that the fees specified in Section 103.4 have 
been paid, the Administrative Authority shall 
issue a permit therefor to the applicant. 

When the Administrative Authority issues 
the permit where plans are required, the 
Administrative Authority shall endorse in 



writing or stamp the plans and specifications 
"APPROVED". Such approved plans and 
specifications shall not be changed, modified or 
altered without authorization from the 
Administrative Authority and all work shall be 
done in accordance with approved plans. 

The Administrative Authority may issue a 
permit for the construction of a part of a 
plumbing system before the entire plans and 
specifications for the whole system have been 
submitted or approved, provided adequate 
information and detailed statements have been 
filed complying with all pertinent requirements 
of this Code. The holder of such permit may 
proceed at the holder's risk without assurance 
that the permit for the entire building, structure 
or plumbing system will be granted. 

103.3.2 Retention of Plans. One set of 

approved plans, specifications and computations 
shall be retained by the Administrative 
Authority until final approval of the work 
covered therein. One set of approved plans and 
specifications shall be returned to the applicant, 
and said set shall be kept on the site of the 
building or work at all times during which the 
work authorized thereby is in progress. 

103.3.3 Validity of Permit. The issuance of a 
permit or approval of plans and specifications 
shall not be construed to be a permit for, or an 
approval of, any violation of any of the 
provisions of this Code or of any other 
ordinance of the jurisdiction. No permit 
presuming to give authority to violate or cancel 
the provisions of this Code shall be valid. 

The issuance of a permit based upon plans, 
specifications or other data shall not prevent the 
Administrative Authority from thereafter 
requiring the correction of errors in said plans, 
specifications and other data or from preventing 
building operations being carried on thereunder 
when in violation of this Code or of other 
ordinances of this jurisdiction. 

103.3.4 Expiration. Every permit issued by the 
Administrative Authority under the provisions 
of this Code shall expire by limitation and 
become null and void if the work authorized by 
such permit is not commenced within one 
hundred eighty (180) days from the date of such 
permit, or if the work authorized by such permit 
is suspended or abandoned at any time after the 
work is commenced for a period of one hundred 
eighty (180) days. Before such work can be 
recommenced, a new permit shall first be 
obtained to do so, and the fee therefor shall be 
one-half the amount required for a new permit 



ADMINISTRATION 



103.3-103.5 



for such work, provided no changes have been 
made or will be made in the original plans and 
specifications for such work, and provided 
further, that such suspensions or abandonment 
has not exceeded one year. 

Any permittee holding an unexpired permit 
may apply for an extension of the time within 
which work may commence under that permit 
when the permittee is unable to commence work 
within the time required by this section for good 
and satisfactory reasons. The Administrative 
Authority may extend the time for action by the 
permittee for a period not exceeding one 
hundred eighty (180) days upon written request 
by the permittee showing that circumstances 
beyond the control of the permittee have 
prevented action from being taken. No permit 
shall be extended more than once. In order to 
renew action on a permit after expiration, the 
permittee shall pay a new full permit fee. 

103.3.5 Suspension or Revocation. The 

Administrative Authority may, in writing, 
suspend or revoke a permit issued under the 
provisions of this Code whenever the permit is 
issued in error or on the basis of incorrect 
information supplied or in violation of other 
ordinance or regulation of the jurisdiction. 

103.4 Fees 

103.4.1 Permit Fees. The fee for each permit 
shall be set forth in Table 1-1. 

103.4.2 Plan Review Fees. When a plan or 
other data is required to be submitted by 103.2.2, 
a plan review fee shall be paid at the time of 
submitting plans and specifications for review. 
The plan review fees for plumbing work shall be 
equal to sixty-five (65) percent of the total permit 
fee as set forth in Table 1-1. When plans are 
incomplete or changed so as to require 
additional review, a fee shall be charged at the 
rate shown in Table 1-1. 

103.4.3 Expiration of Plan Review. 

Applications for which no permit is issued 
within one hundred eighty (180) days following 
the date of application shall expire by limitation 
and plans and other data submitted for review 
may thereafter be returned to the applicant or 
destroyed by the Administrative Authority. The 
Administrative Authority may exceed the time 
for action by the applicant for a period not to 
exceed one hundred eighty (180) days upon 
request by the applicant showing that 
circumstances beyond the control of the 
applicant have prevented action from being 
taken. No application shall be extended more 



than once. In order to renew action on an 
application after expiration, the applicant shall 
resubmit plans and pay a new plan review fee. 

103.4.4 Investigation Fees: Work Without a 
Permit 

103.4.4.1 Whenever any work for which a 
permit is required by this Code has been 
commenced without first obtaining said 
permit, a special investigation shall be made 
before a permit may be issued for such work. 

103.4.4.2 An investigation fee, in addition to 
the permit fee, shall be collected whether or 
not a permit is then or subsequently issued. 
The investigation fee shall be equal to the 
amount of the permit fee that would be 
required by this Code if a permit were to be 
issued. The payment of such investigation fee 
shall not exempt any person from compliance 
with all other provisions of this Code, nor 
from any penalty prescribed by law. 

103.4.5 Fee Refunds 

103.4.5.1 The Administrative Authority 
may authorize the refunding of any fee paid 
hereunder which was erroneously paid or 
collected. 

103.4.5.2 The Administrative Authority 
may authorize the refunding of not more 
than eighty (80) percent of the permit fee 
paid when no work has been done under a 
permit issued in accordance with this Code. 

103.4.5.3 The Administrative Authority 
may authorize the refunding of not more 
than eighty (80) percent of the plan review 
fee paid when an applicant for a permit for 
which a plan review fee has been paid is 
withdrawn or cancelled before any plan 
review effort has been expended. 

The Administrative Authority shall not 
authorize the refunding of any fee paid 
except upon written application filed by the 
original permittee not later than one 
hundred eighty (180) days after the date of 
fee payment. 

103.5 Inspections 

103.5.1 General. All plumbing systems for 
which a permit is required by this Code shall be 
inspected by the Administrative Authority. No 
portion of any plumbing system shall be 
concealed until inspected and approved. Neither 
the Administrative Authority nor the 
jurisdiction shall be liable for expense entailed in 
the removal or replacement of material required 
to permit inspection. When the installation of a 



103.5 



UNIFORM PLUMBING CODE 



plumbing system is complete, an additional and 
final inspection shall be made. Plumbing 
systems regulated by this Code shall not be 
connected to the water, energy fuel supply, or 
the sewer system until authorized by the 
Administrative Authority. 

103.5.1.1 Inspection. No water supply 
system or portion thereof, shall be covered 
or concealed until it first has been tested, 
inspected, and approved. 

1 03.5.1 .2 Scope. All new plumbing work 
and such portions of existing systems as 
may be affected by new work, or any 
changes, shall be inspected by the 
Administrative Authority to insure 
compliance with all the requirements of this 
Code and to assure that the installation and 
construction of the plumbing system is in 
accordance with approved plans. 

103.5.1.3 Covering or Using. No 

plumbing or drainage system, building 
sewer, private sewer disposal system or part 
thereof, shall be covered, concealed, or put 
into use until it has been tested, inspected, 
and accepted as prescribed in this Code. 

103.5.1.4 Uncovering. Any drainage or 
plumbing system, building sewer, private 
sewage disposal system, or part thereof, 
which is installed, altered, or repaired is 
covered or concealed before being inspected, 
tested, and approved as prescribed in this 
Code, it shall be uncovered for inspection 
after notice to uncover the work has been 
issued to the responsible person by the 
Administrative Authority. 

103.5.2 Operation of Plumbing Equipment. 

The requirements of this section shall not be 
considered to prohibit the operation of any 
plumbing installed to replace existing 
equipment or fixtures serving an occupied 
portion of the building in the event a request for 
inspection of such equipment or fixture has been 
filed with the Administrative Authority not 
more than seventy-two (72) hours after such 
replacement work is completed, and before any 
portion of such plumbing system is concealed by 
any permanent portion of the building. 

103.5.3 Testing of Systems. All plumbing 
systems shall be tested and approved as required 
by this Code or the Administrative Authority. 

103.5.3.1 Test. Tests shall be conducted in 
the presence of the Administrative 
Authority or the Administrative Authority's 
duly appointed representative. 



103.5.3.2 Test Waived. No test or | 
inspection shall be required where a 
plumbing system, or part thereof, is set up 
for exhibition purposes and has no 
connection with a water or drainage system. 

103.5.3.3 Exceptions. In cases where it I 
would be impractical to provide the 
required water or air tests, or for minor | 
installations and repairs, the Administrative 
Authority, at the Administrative Authority's 
discretion, may make such inspection as 
deemed advisable in order to be assured 
that the work has been performed in 
accordance with the intent of this Code. 

103.5.3.4 Protectively Coated Pipe. | 

Protectively coated pipe shall be inspected 
and tested, and any visible void, damage or 
imperfection to the pipe coating shall be 
repaired to comply with Section 313.0 (see 
IAPMO IS-13, listed in Appendix I). 

103.5.3.5 Tightness. Joints and connections | 
in the plumbing system shall be gastight and 
watertight for the pressures required by test. 

103.5.4 Inspection Requests. It shall be the 
duty of the person doing the work authorized by 
a permit to notify the Administrative Authority 
that such work is ready for inspection. The 
Administrative Authority may require that 
every request for inspection be filed at least one 
working day before such inspection is desired. 
Such request may be in writing or by telephone, 
at the option of the Administrative Authority. 

It shall be the duty of the person requesting 
inspections required by this Code to provide 
access to and means for proper inspection of 
such work. 

103.5.4.1 Advance Notice. It shall be the 
duty of the person doing the work 
authorized by the permit to notify the 
Administrative Authority, orally or in 
writing, that said work is ready for 
inspection. Such notification shall be given 
not less than twenty-four (24) hours before 
the work is to be inspected. 

103.5.4.2 Responsibility. It shall be the 
duty of the holder of a permit to make sure 
that the work will stand the test prescribed 
before giving the notification. 

The equipment, material, and labor 
necessary for inspection or tests shall be 
furnished by the person to whom the permit 
is issued or by whom inspection is requested. 

103.5.5 Other Inspections. In addition to the 
inspections required by this Code, the 



ADMINISTRATION 



103.5-103.8 



Administrative Authority may require other 
inspections of any plumbing work to ascertain 
compliance with the provisions of this Code and 
other laws which are enforced by the 
Administrative Authority. 

103.5.5.1 Defective Systems. An air test 
shall be used in testing the sanitary 
condition of the drainage or plumbing 
system of any building premises when there 
is reason to believe that it has become 
defective. In buildings or premises 
condemned by the proper Administrative 
Authority because of an insanitary condition 
of the plumbing system or part thereof, the 
alterations in such system shall conform to 
the requirements of this Code. 

103.5.5.2 Moved Structures. All parts of 
the plumbing systems of any building or 
part thereof that is moved from one 
foundation to another, or from one location 
to another, shall be completely tested as 
prescribed elsewhere in this section for new 
work, except that walls or floors need not be 
removed during such test when other 
equivalent means of inspection acceptable to 
the Administrative Authority are provided. 

103.5.6 Reinspections. A reinspection fee may 
be assessed for each inspection or reinspection 
when such portion of work for which inspection 
is called is not complete or when required 
corrections have not been made. 

This provision is not to be interpreted as 
requiring reinspection fees the first time a job is 
rejected for failure to comply with the 
requirements of this Code, but as controlling the 
practice of calling for inspections before the job 
is ready for inspection or reinspection. 

Reinspection fees may be assessed when the 
approved plans are not readily available to the 
inspector, for failure to provide access on the 
date for which the inspection is requested, or for 
deviating from plans requiring the approval of 
the Administrative Authority. 

To obtain reinspection, the applicant shall 
file an application therefor in writing upon a 
form furnished for that purpose and pay the 
reinspection fee in accordance with Table 1-1. 

In instances where reinspection fees have 
been assessed, no additional inspection of the 
work will be performed until the required fees 
have been paid. 

103.5.6.1 Corrections. Notices of 
correction or violation shall be written by 
the Administrative Authority and may be 
posted at the site of the work or mailed or 



delivered to the permittee or his authorized 
representative. Refusal, failure, or neglect to 
comply with any such notice or order within 
ten (10) days of receipt thereof, shall be 
considered a violation of this Code, and 
shall be subject to the penalties set forth 
elsewhere in this Code for violations. 

103.5.6.2 Retesting. If the Administrative 
Authority finds that the work will not pass 
the test, necessary corrections shall be made 
and the work shall then be resubmitted for 
test or inspection. 

103.5.6.3 Approval. Upon the satisfactory 
completion and final test of the plumbing 
system, a certificate of approval shall be 
issued by the Administrative Authority to 
the permittee on demand. 

103.6 Connection Approval 

103.6.1 Energy Connections. No person shall 
make connections from a source of energy or fuel 
to any plumbing system or equipment regulated 
by this Code and for which a permit is required 
until approved by the Administrative Authority. 

103.6.2 Other Connections. No person shall 
make connection from any water-supply line nor 
shall connect to any sewer system regulated by 
this Code and for which a permit is required 
until approved by the Administrative Authority. 

103.6.3 Temporary Connections. The 

Administrative Authority may authorize 
temporary connection of the plumbing 
equipment to the source of energy or fuel for the 
purpose of testing the equipment. 

103.7 Unconstitutionality 

103.7.1 If any section, subsection, sentence, 
clause, or phrase of this Code is, for any reason, 
held to be unconstitutional, such decision shall 
not affect the validity of the remaining portions of 
this Code. The Legislative Body hereby declares 
that it would have passed this Code, and each 
section, subsection, sentence, clause, or phrase 
thereof, irrespective of the fact that any one or 
more sections, subsections, sentences, clauses, 
and phrases be declared unconstitutional. 

103.8 Validity 

103.8.1 If any provision of this Code, or the 
application thereof to any person or 
circumstance, is held invalid, the remainder of 
the Code, or the application of such provision to 
other persons or circumstances, shall not be 
affected thereby. 

1 03.8.2 Wherever in this Code reference is made 
to an appendix, the provisions in the appendix 
shall not apply unless specifically adopted. 



Table 1-1 UNIFORM PLUMBING CODE 

TABLE 1-1 

Plumbing Permit Fees 
Permit Issuance 

1. For issuing each permit $20.00 

2. For issuing each supplemental permit $10.00 

Unit Fee Schedule (in addition to items 1 and 2 above) 

1 . For each plumbing fixture on one trap or a set of fixtures on one trap (including water, 

drainage piping and backflow protection therefor) $7.00 

2. For each building sewer and each trailer park sewer $15.00 

3. Rainwater systems - per drain (inside building) $7.00 

4. For each cesspool (where permitted) $25.00 

5. For each private sewage disposal system $40.00 

6. For each water heater and/or vent $7.00 

7. For each gas-piping system of one to five outlets $5.00 

8. For each additional gas piping system outlet, per outlet $1 .00 

9. For each industrial waste pretreatment interceptor including its trap and vent, 

except kitchen-type grease interceptors functioning as fixture traps $7.00 

10. For each installation, alteration or repair of water piping and/or water treating equipment, each $7.00 

11. For each repair or alteration of drainage or vent piping, each fixture $7.00 

12. For each lawn sprinkler system on any one meter including backflow protection devices therefor ....$7.00 

13. For atmospheric-type vacuum breakers not included in item 12: 

1 to 5 $5.00 

over 5, each $1.00 

14. For each backflow protective device other than atmospheric type vacuum breakers: 

2 inch (51 mm) diameter and smaller $7.00 

over 2 inch (51 mm) diameter $15.00 

15. For each graywater system $40.00 

16. For initial installation and testing for a reclaimed water system $30.00* 

17. For each annual cross-connection testing of a reclaimed water system (excluding initial test) $30.00* 

18. For each medical gas piping system serving one to five inlet(s)/outlet(s) for a specific gas $50.00 

19. For each additional medical gas inlet(s)/outlet(s) $5.00 

Other Inspections and Fees 

1. Inspections outside of normal business hours $30.00* 

2. Reinspection fee $30.00 

3. Inspections for which no fee is specifically indicated $30.00* 

4. Additional plan review required by changes, additions or 

revisions to approved plans (minimum charge - one-half hour) $30.00* 

*Per hour for each hour worked or the total hourly cost to the jurisdiction, whichever is greater. This cost shall 
include supervision, overhead, equipment, hourly wages and fringe benefits of all the employees involved. 



CHAPTER 2 

DEFINITIONS 



201.0 General 

For the purpose of this Code, the following terms 
have the meanings indicated in this chapter. 

No attempt is made to define ordinary words 
which are used in accordance with their established 
dictionary meanings, except where a word has been 
used loosely and it is necessary to define its meaning 
as used in this Code to avoid misunderstanding. 

The definitions of terms are arranged 
alphabetically according to the first word of the 
term. 

202.0 Definition of Terms 



203.0 



-A- 



ABS - Acrylonitrile-Butadiene-Styrene. 

Accessible - When applied to a fixture, connection, 
appliance, or equipment, "accessible" means having 
access thereto, but which first may require the 
removal of an access panel, door, or similar 
obstruction. "Readily accessible" means direct access 
without the necessity of removing any panel, door, 
or similar obstruction. 

Administrative Authority - The individual official, 
board, department, or agency established and 
authorized by a state, county, city, or other political 
subdivision created by law to administer and enforce 
the provisions of the plumbing code as adopted or 
amended. This definition shall include the 
Administrative Authority's duly authorized 
representative. 

Airbreak - A physical separation which may be a 
low inlet into the indirect waste receptor from the 
fixture, appliance, or device indirectly connected. 

Air Chamber - A pressure surge-absorbing device 
operating through the compressibility of air. 

Airgap, Drainage - The unobstructed vertical 
distance through the free atmosphere between the 
lowest opening from any pipe, plumbing fixture, 
appliance or appurtenance conveying waste to the 
flood level rim of the receptor. 

Airgap, Water Distribution - The unobstructed 
vertical distance through the free atmosphere 
between the lowest opening from any pipe or faucet 
conveying potable water to the flood level rim of any 
tank, vat or fixture. 

Anchors - See Supports. 



Approved - Accepted or acceptable under an 
applicable specification or standard stated or cited in 
this Code, or accepted as suitable for the proposed 
use under procedures and authority of the 
Administrative Authority. 

Approved Testing Agency - An organization 
primarily established for purposes of testing to 
approved standards and approved by the 
Administrative Authority. 

Area Drain - A receptacle designed to collect surface 
or storm water from an open area. 

Aspirator - A fitting or device supplied with water 
or other fluid under positive pressure which passes 
through an integral orifice or constriction, causing a 
vacuum. 



204.0 



-B- 



Backflow - The flow of water or other liquids, 
mixtures, or substances into the distributing pipes of 
a potable supply of water from any sources other 
than its intended source. See Back-Siphonage, Back- 
Pressure Backflow. 

Backf low Connection - Any arrangement whereby 
backflow can occur. 

Back-Pressure Backflow - Backflow due to an 
increased pressure above the supply pressure, which 
may be due to pumps, boilers, gravity or other 
sources of pressure. 

Backflow Preventer - A device or means to prevent 
backflow into the potable water system. 
Back-Siphonage - The flowing back of used, 
contaminated, or polluted water from a plumbing 
fixture or vessel into a water supply pipe due to a 
negative pressure in such pipe. See Backflow. 

Backwater Valve - A device installed in a drainage 
system to prevent reverse flow. 

Bathroom - A room equipped with a shower or 
bathtub. 

Battery of Fixtures - Any group of two (2) or more 
similar, adjacent fixtures which discharge into a 
common horizontal waste or soil branch. 
Boiler Blowoff - An outlet on a boiler to permit 
emptying or discharge of sediment. 

Branch - Any part of the piping system other than a 
main, riser, or stack. 

Branch, Fixture - See Fixture Branch. 

Branch, Horizontal - See Horizontal Branch. 



204.0 - 205.0 



UNIFORM PLUMBING CODE 



Branch Vent - A vent connecting one or more 
individual vents with a vent stack or stack vent. 

Brazed Joint - Any joint obtained by joining of 
metal parts with alloys which melt at temperatures 
higher than 840°F (449°C), but lower than the 
melting temperature of the parts to be joined. 

Building - A structure built, erected, and framed of 
component structural parts designed for the housing, 
shelter, enclosure, or support of persons, animals, or 
property of any kind. 

Building Drain - That part of the lowest piping of a 
drainage system which receives the discharge from 
soil, waste, and other drainage pipes inside the walls 
of the building and conveys it to the building sewer 
beginning two (2) feet (610 mm) outside the building 
wall. 

Building Drain (Sanitary) - A building drain which 

conveys sewage only. 

Building Drain (Storm) - A building drain which 

conveys storm water or other drainage, but no 

sewage. 

Building Sewer - That part of the horizontal piping 
of a drainage system which extends from the end of 
the building drain and which receives the discharge 
of the building drain and conveys it to a public 
sewer, private sewer, individual sewage disposal 
system, or other point of disposal. 

Building Sewer (Combined) - A building sewer 
which conveys both sewage and storm water or 
other drainage. 

Building Sewer (Sanitary) - A building sewer 
which conveys sewage only. 

Building Sewer (Storm) - A building sewer which 
conveys storm water or other drainage, but no 
sewage. 

Building Subdrain - That portion of a drainage 
system which does not drain by gravity into the 
building sewer. 

Building Supply - The pipe carrying potable water 
from the water meter or other source of water supply 
to a building or other point of use or distribution on 
the lot. Building supply shall also mean water 
service. 

205.0 - C - 

Certified Backflow Assembly Tester - A person 
who has shown competence to test and maintain 
backflow assemblies to the satisfaction of the 
Administrative Authority having jurisdiction. 

Cesspool - A lined excavation in the ground which 
receives the discharge of a drainage system or part 
thereof, so designed as to retain the organic matter 



and solids discharging therein, but permitting the 
liquids to seep through the bottom and sides. 

Chemical Waste - See Special Wastes. 

Clarifier - See Interceptor. 

Clear Water Waste - Cooling water and condensate 
drainage from refrigeration and air-conditioning 
equipment; cooled condensate from steam heating 
systems; cooled boiler blowdown water. 

Clinic Sink - A sink designed primarily to receive 
wastes from bedpans and having a flush rim, an 
integral trap with a visible trap seal, and the same 
flushing and cleansing characteristics as a water 
closet. 

Code - This publication: Uniform Plumbing Code. 

Combination Thermostatic/Pressure Balancing 
Valve - A mixing valve which senses outlet 
temperature and incoming hot and cold water 
pressure and compensates for fluctuations in 
incoming hot and cold water temperatures and 
pressures to stabilize outlet temperatures. 

Combination Waste and Vent System - A specially 
designed system of waste piping embodying the 
horizontal wet venting of one or more sinks or floor 
drains by means of a common waste and vent pipe, 
adequately sized to provide free movement of air 
above the flow line of the drain. 

Combined Building Sewer - See Building Sewer, 
(Combined). 

Combustible Construction - A structure in which 
any member of its structural framework will ignite 
and burn at a temperature of 1392°F (756°C) or less. 

Common - That part of a plumbing system which is 
so designed and installed as to serve more than one 
(1) appliance, fixture, building, or system. 

Conductor - A pipe inside the building which 
conveys storm water from the roof to a storm drain, 
combined building sewer, or other approved point of 
disposal. See Downspout. 

Confined Space - A room or space having a volume 
less than fifty (50) cubic feet per 1000 Btu/h (1.4 
m3/293W) of the aggregate input rating of all fuel 
burning appliances installed in that space. 

Contamination - An impairment of the quality of 
the potable water which creates an actual hazard to 
the public health through poisoning or through the 
spread of disease by sewage, industrial fluids or 
waste. Also defined as High Hazard. 

Continuous Vent - A vertical vent that is a 
continuation of the drain to which it connects. 

Continuous Waste - A drain connecting the 
compartments of a set of fixtures to a trap or 
connecting other permitted fixtures to a common trap. 



10 



DEFINITIONS 



205.0 - 209.0 



Critical Level - The critical level (C-L or C/L) 
marking on a backflow prevention device or vacuum 
breaker is a point conforming to approved standards 
and established by the testing laboratory (usually 
stamped on the device by the manufacturer) which 
determines the minimum elevation above the flood 
level rim of the fixture or receptacle served at which 
the device may be installed. When a backflow 
prevention device does not bear a critical level 
marking, the bottom of the vacuum breaker, 
combination valve, or the bottom of any such 
approved device shall constitute the critical level. 
Cross-Connection - Any connection or 
arrangement, physical or otherwise, between a 
potable water supply system and any plumbing 
fixture or any tank, receptacle, equipment or device, 
through which it may be possible for non-potable, 
used, unclean, polluted and contaminated water, or 
other substances, to enter into any part of such 
potable water system under any condition. 



206.0 



-D- 



Dead End - A branch leading from a soil, waste or 
vent pipe, building drain, or building sewer, and 
terminating at a developed length of two (2) feet (610 
mm) or more by means of a plug, cap, or other 
closed fitting, except for piping serving as a cleanout 
extension to an accessible area. 

Department Having Jurisdiction - The Administrative 
Authority, including any other law enforcement 
agency affected by any provision of this Code, 
whether such agency is specifically named or not. 

Developed Length - The length along the center 
line of a pipe and fittings. 

Diameter - Unless specifically stated, "diameter" is 
the nominal diameter as designated commercially. 

Domestic Sewage - The liquid and water-borne 
wastes derived from the ordinary living processes, 
free from industrial wastes, and of such character as 
to permit satisfactory disposal, without special 
treatment, into the public sewer or by means of a 
private sewage disposal system. 

Downspout - The rainleader from the roof to the 
building storm drain, combined building sewer, or 
other means of disposal located outside of the 
building. See Conductor and Leader. 

Drain - Any pipe which carries waste or water-borne 
wastes in a building drainage system. 

Drainage System - Includes all the piping within 
public or private premises, which conveys sewage or 
other liquid wastes to a legal point of disposal, but 
does not include the mains of a public sewer system 
or a public sewage treatment or disposal plant. 



Durham System - A soil or waste system in which 
all piping is threaded pipe, tubing, or other such 
rigid construction, using recessed drainage fittings to 
correspond to the types of piping. 

207.0 - E - 

Effective Opening - The minimum cross-sectional 
area at the point of water supply discharge measured 
or expressed in terms of: (1) diameter of a circle, or 
(2) if the opening is not circular, or the diameter of a 
circle of equivalent cross-sectional area. (This is 
applicable also to airgap.) 

Existing Work - A plumbing system or any part 
thereof which has been installed prior to the effective 
date of this Code. 



208.0 



-F- 



Fixture Branch - A water supply pipe between the 
fixture supply pipe and the water distributing pipe. 

Fixture Drain - The drain from the trap of a fixture to 
the junction of that drain with any other drain pipe. 

Fixture Supply - A water supply pipe connecting 
the fixture with the fixture branch. 

Fixture Unit - A quantity in terms of which the load- 
producing effects on the plumbing system of 
different kinds of plumbing fixtures are expressed on 
some arbitrarily chosen scale. 

Flood Level - See Flooded. 

Flood Level Rim - The top edge of a receptacle from 
which water overflows. 

Flooded - A fixture is flooded when the liquid 
therein rises to the flood level rim. 
Flush Tank - A tank located above or integral with 
water closets, urinals, or similar fixtures for the 
purpose of flushing the usable portion of the fixture. 

Flush Valve - A valve located at the bottom of a 
tank for the purpose of flushing water closets and 
similar fixtures. 

Flushometer Tank - A tank integrated within an air 
accumulator vessel which is designed to discharge a 
predetermined quantity of water to fixtures for 
flushing purposes. 

Flushometer Valve - A valve which discharges a 
predetermined quantity of water to fixtures for 
flushing purposes and is actuated by direct water 
pressure. 

209.0 - G - 

Grade - The slope or fall of a line of pipe in reference 
to a horizontal plane. In drainage, it is usually 
expressed as the fall in a fraction of an inch (mm) or 
percentage slope per foot (meter) length of pipe. 



11 



209.0-214.0 



UNIFORM PLUMBING CODE 



Grease Interceptor - An interceptor of at least 750 
gallon (2839 L) capacity to serve one (1) or more 
fixtures and which shall be remotely located. 

Grease Trap - A device designed to retain grease 
from one (1) to a maximum of four (4) fixtures. 



210.0 



-H- 



Hangers - See Supports. 

High Hazard - See Contamination. 

Horizontal Branch - A drain pipe extending 
laterally from a soil or waste stack or building drain 
with or without vertical sections or branches, which 
receives the discharge from one or more fixture 
drains and conducts it to the soil or waste stack or to 
the building drain. 

Horizontal Pipe - Any pipe or fitting which is installed 
in a horizontal position or which makes an angle of 
less than forty-five (45) degrees with the horizontal. 
House Drain - See Building Drain. 
House Sewer - See Building Sewer. 

211.0 -I- 

Indirect Waste Pipe - A pipe that does not connect 
directly with the drainage system but conveys liquid 
wastes by discharging into a plumbing fixture, 
interceptor, or receptacle which is directly connected 
to the drainage system. 

Individual Vent - A pipe installed to vent a fixture 
trap and which connects with the vent system above 
the fixture served or terminates in the open air. 

Industrial Waste - Any and all liquid or water- 
borne waste from industrial or commercial 
processes, except domestic sewage. 

Insanitary - A condition which is contrary to 
sanitary principles or is injurious to health. 

Conditions to which "insanitary" shall apply 
include the following: 

(1) Any trap which does not maintain a proper 
trap seal. 

(2) Any opening in a drainage system, except 
where lawful, which is not provided with an 
approved water-sealed trap. 

(3) Any plumbing fixture or other waste 
discharging receptacle or device, which is not 
supplied with water sufficient to flush it and 
maintain it in a clean condition. 

(4) Any defective fixture, trap, pipe, or fitting. 

(5) Any trap, except where in this Code 
exempted, directly connected to a drainage 
system, the seal of which is not protected against 
siphonage and back-pressure by a vent pipe. 



(6) Any connection, cross-connection, 
construction or condition, temporary or 
permanent, which would permit or make 
possible by any means whatsoever, for any 
unapproved foreign matter to enter a water 
distribution system used for domestic purposes. 

(7) The foregoing enumeration of conditions to 
which the term "insanitary" shall apply, shall 
not preclude the application of that term to 
conditions that are, in fact, insanitary. 

Interceptor (Clarifier) - A device designed and 
installed so as to separate and retain deleterious, 
hazardous, or undesirable matter from normal 
wastes and permit normal sewage or liquid wastes to 
discharge into the disposal terminal by gravity. 

Invert - The lowest portion of the inside of a 
horizontal pipe. 



212.0 

No definitions 

213.0 

No definitions 



-J- 



-K- 



214.0 -L- 

Labeled - Equipment or materials bearing a label of 
a listing agency. See Listed. 

Lavatories in Sets - Two (2) or three (3) lavatories 
that are served by one (1) trap. 

Leader - An exterior vertical drainage pipe for 
conveying storm water from roof or gutter drains. 
See Downspout. 

Liquid Waste - The discharge from any fixture, 
appliance, or appurtenance in connection with a 
plumbing system which does not receive fecal 
matter. 

Listed - Equipment or materials included in a list 
published by a listing agency that maintains periodic 
inspection on current production of listed equipment 
or materials and whose listing states either that the 
equipment or material complies with approved 
standards or has been tested and found suitable for 
use in a specified manner. 

Listing Agency - An agency accepted by the 
Administrative Authority which is in the business of 
listing or labeling and which maintains a periodic 
inspection program on current production of listed 
models, and which makes available a published 
report of such listing in which specific information is 
included that the product has been tested to 
approved standards and found safe for use in a 
specific manner. 



12 



DEFINITIONS 



214.0-218.0 



Lot - A single or individual parcel or area of land 
legally recorded or validated by other means 
acceptable to the Administrative Authority on which 
is situated a building or which is the site of any work 
regulated by this Code, together with the yards, 
courts, and unoccupied spaces legally required for 
the building or works, and which is owned by or is 
in the lawful possession of the owner of the building 
or works. 

Low Hazard - See Pollution. 



215.0 -M- 

Main - The principal artery of any system of 
continuous piping to which branches may be 
connected. 

Main Sewer - See Public Sewer. 

Main Vent - The principal artery of the venting 
system to which vent branches may be connected. 

May - A permissive term. 

Mobile Home Park Sewer - That part of the 
horizontal piping of a drainage system which begins 
two (2) feet (610 mm) downstream from the last 
mobile home site and conveys it to a public sewer, 
private sewer, individual sewage disposal system, or 
other point of disposal. 

216.0 -N- 

Nuisance - Includes, but is not limited to: 

(1) Any public nuisance known at common law 
or in equity jurisprudence. 

(2) Whenever any work regulated by this Code 
is dangerous to human life or is detrimental to 
health and property. 

(3) Inadequate or unsafe water supply or 
sewage disposal system. 

217.0 -O- 

Offset - A combination of elbows or bends in a line 
of piping which brings one section of the pipe out of 
line but into a line parallel with the other section. 

Oil Interceptor - See Interceptor. 

218.0 -P- 

PB - Polybutylene. 

PE - Polyethylene. 

Person - A natural person, his heirs, executor, 
administrators, or assigns and shall also include a 
firm, corporation, municipal or quasi-municipal 
corporation, or governmental agency. Singular 
includes plural, male includes female. 



Pipe - A cylindrical conduit or conductor, 
conforming to the particular dimensions commonly 
known as "pipe size". 

Plumbing - The business, trade, or work having to 
do with the installation, removal, alteration, or repair 
of plumbing and drainage systems or parts thereof. 

Plumbing Appliance - Any one of a special class of 
device or equipment which is intended to perform a 
special plumbing function. Its operation and /or 
control may be dependent upon one or more 
energized components, such as motors, controls, 
heating elements, or pressure or temperature-sensing 
elements. Such device or equipment may operate 
automatically through one or more of the following 
actions: a time cycle, a temperature range, a pressure 
range, a measured volume or weight; or the device 
or equipment may be manually adjusted or 
controlled by the user or operator. 
Plumbing Appurtenance - A manufactured device, 
or a prefabricated assembly, or an on-the-job 
assembly of component parts, and which is an 
adjunct to the basic piping system and plumbing 
fixtures. An appurtenance demands no additional 
water supply, nor does it add any discharge load to a 
fixture or the drainage system. It performs some 
useful function in the operation, maintenance, 
servicing, economy, or safety of the plumbing system. 
Plumbing Fixture - An approved type installed 
receptacle, device, or appliance which is supplied 
with water or which receives liquid or liquid-borne 
wastes and discharges such wastes into the drainage 
system to which it may be directly or indirectly 
connected. Industrial or commercial tanks, vats, and 
similar processing equipment are not plumbing 
fixtures, but may be connected to or discharged into 
approved traps or plumbing fixtures when and as 
otherwise provided for elsewhere in this Code. 

Plumbing Official - See Administrative Authority. 

Plumbing System - Includes all potable water 
building supply and distribution pipes, all plumbing 
fixtures and traps, all drainage and vent pipe(s), and 
all building drains and building sewers, including 
their respective joints and connections, devices, 
receptors, and appurtenances within the property | 
lines of the premises and shall include potable water 
piping, potable water treating or using equipment, 
medical gas and medical vacuum systems, fuel gas | 
piping, water heaters and vents for same. 
Pollution - An impairment of the quality of the 
potable water to a degree which does not create a 
hazard to the public health but which does adversely 
and unreasonably affect the aesthetic qualities of 
such potable waters for domestic use. Also defined 
as Low Hazard. 



13 



218.0-221.0 



UNIFORM PLUMBING CODE 



Potable Water - Water which is satisfactory for 
drinking, culinary, and domestic purposes and meets 
the requirements of the health authority having 
jurisdiction. 

Pressure - The normal force exerted by a 
homogeneous liquid or gas, per unit of area, on the 
wall of the container. 

(1) Static Pressure - The pressure existing 
without any flow. 

(2) Residual Pressure - The pressure available 
at the fixture or water outlet after allowance is 
made for pressure drop due to friction loss, 
head, meter, and other losses in the system 
during maximum demand periods. 

Pressure Balancing Valve - A mixing valve which 
senses incoming hot and cold water pressures and 
compensates for fluctuations in either, to stabilize 
outlet temperature. 

Private or Private Use - Applies to plumbing 
fixtures in residences and apartments, to private 
bathrooms in hotels and hospitals, and to restrooms 
in commercial establishments where the fixtures are 
intended for the use of a family or an individual. 

Private Sewage Disposal System - A septic tank 
with the effluent discharging into a subsurface 
disposal field, into one or more seepage pits or into a 
combination of subsurface disposal field and seepage 
pit or of such other facilities as may be permitted 
under the procedures set forth elsewhere in this Code. 

Private Sewer - A building sewer which receives 
the discharge from more than one (1) building drain 
and conveys it to a public sewer, private sewage 
disposal system, or other point of disposal. 

Public or Public Use - All buildings or structures 
that are not defined as private or private use. 

Public Sewer - A common sewer directly controlled 
by public authority. 

PVC - Polyvinyl Chloride. 



219.0 

No definitions. 



-Q- 



220.0 - R - 

Receptor - An approved plumbing fixture or device 
of such material, shape, and capacity as to adequately 
receive the discharge from indirect waste pipes, so 
constructed and located as to be readily cleaned. 

Regulating Equipment - Includes all valves and 
controls used in a plumbing system which are 
required to be accessible or readily accessible. 

Relief Vent - A vent, the primary function of which 
is to provide circulation of air between drainage and 



vent systems or to act as an auxiliary vent on a 
specially designed system. 

Rim - An unobstructed open edge of a fixture. 

Riser - A water supply pipe which extends 
vertically one (1) full story or more to convey water 
to branches or fixtures. 

Roof Drain - A drain installed to receive water 
collecting on the surface of a roof and to discharge it 
into a leader, downspout, or conductor. 

Roughing-ln - The installation of all parts of the 
plumbing system which can be completed prior to 
the installation of fixtures. This includes drainage, 
water supply, gas piping, and vent piping and the 
necessary fixture supports. 



221.0 



-S- 



Sand Interceptor - See Interceptor. 

SDR - An abbreviation for "standard dimensional 
ratio," which is the specific ratio of the average 
specified outside diameter to the minimum wall 
thickness for outside controlled diameter plastic 
pipe. 

Seepage Pit - A lined excavation in the ground 
which receives the discharge of a septic tank so 
designed as to permit the effluent from the septic 
tank to seep through its bottom and sides. 

Septic Tank - A watertight receptacle which 
receives the discharge of a drainage system or part 
thereof, designed and constructed so as to retain 
solids, digest organic matter through a period of 
detention and allow the liquids to discharge into the 
soil outside of the tank through a system of open 
joint piping or a seepage pit meeting the 
requirements of this Code. 

Sewage - Any liquid waste containing animal or 
vegetable matter in suspension or solution and may 
include liquids containing chemicals in solution. 

Sewage Ejector - A device for lifting sewage by 
entertaining it in a high-velocity jet of steam, air or 
water. 

Sewage Pump - A permanently installed 
mechanical device, other than an ejector, for 
removing sewage or liquid waste from a sump. 

Shall - A mandatory term. 

Shielded Coupling - An approved elastomeric 
sealing gasket with an approved outer shield and a 
tightening mechanism. 
Shock Arrestor - See Water Hammer Arrestor. 

Single Family Dwelling - A building designed to be 
used as a home by the owner of such building, which 
shall be the only dwelling located on a parcel of 
ground with the usual accessory buildings. 



14 



DEFINITIONS 



221.0-225.0 



Size and Type of Tubing - See Diameter. 

Slip Joint - An adjustable tubing connection, 
consisting of a compression nut, a friction ring, and a 
compression washer, designed to fit a threaded 
adapter fitting, or a standard taper pipe thread. 

Slope - See Grade. 

Soil Pipe - Any pipe which conveys the discharge of 
water closets, urinals, or fixtures having similar 
functions, with or without the discharge from other 
fixtures to the building drain or building sewer. 

Soldered Joint - A joint obtained by the joining of 
metal parts with metallic mixtures or alloys which 
melt at a temperature below 800°F (427°C) and above 
300°F (149°C). 

Special Wastes - Wastes which require some 
special method of handling such as the use of 
indirect waste piping and receptors, corrosion 
resistant piping, sand, oil or grease interceptors, 
condensers, or other pretreatment facilities. 

Stack - The vertical main of a system of soil, waste 
or vent piping extending through one or more 

stories. 

Stack Vent - The extension of a soil or waste stack 
above the highest horizontal drain connected to the 
stack. 

Storm Drain - See Building Drain (Storm). 

Storm Sewer - A sewer used for conveying 
rainwater, surface water, condensate, cooling water, 
or similar liquid wastes. 

Subsoil Drain - A drain which collects subsurface or 
seepage water and conveys it to a place of disposal. 

Sump - An approved tank or pit which receives 
sewage or liquid waste and which is located below 
the normal grade of the gravity system and which 
must be emptied by mechanical means. 

Supports - Supports, hangers, and anchors are 
devices for properly supporting and securing pipe, 
fixtures, and equipment. 



222.0 



-T- 



Tailpiece - The pipe or tubing that connects the 
outlet of a plumbing fixture to a trap. 

Thermostatic (Temperature Control) Valve - A 

mixing valve which senses outlet temperature and 
compensates for fluctuations in incoming hot or cold 
water temperatures. 

Trap - A fitting or device so designed and 
constructed as to provide, when properly vented, a 
liquid seal which will prevent the back passage of air 
without materially affecting the flow of sewage or 
waste water through it. 



Trap Arm - That portion of a fixture drain between a 
trap and the vent. 

Trap Primer - A device and system of piping that 

maintains a water seal in a remote trap. 

Trap Seal - The vertical distance between the crown 

weir and the top dip of the trap. 

Crown Weir (Trap Weir) -the lowest point in 
the cross section of the horizontal waterway at 
the exit of the trap. 

Top Dip (of Trap) - the highest point in the 
internal cross section of the trap at the lowest 
part of the bend (inverted siphon). By contrast, 
the bottom dip is the lowest point in the internal 
cross section. 

223.0 - U - 

Unconfined Space - A room or space having a 
volume equal to at least 50 cubic feet per 1000 Btu/h 
(1.4 m3/293W) of the aggregate input rating of all 
fuel-burning appliances installed in that space. 
Rooms communicating directly with the space in 
which the appliances are installed, through openings 
not furnished with doors, are considered a part of 
the unconfined space. 
Unsanitary (Insanitary) - See Insanitary. 



224.0 



-V- 



Vacuum - Any pressure less than that exerted by the 

atmosphere. 

Vacuum Breaker - See Backflow Preventer. 

Vacuum Relief Valve - A device that prevents 
excessive vacuum in a pressure vessel. 

Vent - Any pipe provided to ventilate a plumbing 
system, to prevent trap siphonage and back pressure, or 
to equalize the air pressure within the drainage system. 

Vent Pipe - See Vent. 

Vent Stack - The vertical vent pipe installed 
primarily for the purpose of providing circulation of 
air to and from any part of the drainage system. 
Vent System - A pipe or pipes installed to provide a 
flow of air to or from a drainage system or to provide 
a circulation of air within such system to protect trap 
seals from siphonage and back- pressure. 

Vertical Pipe - Any pipe or fitting which is installed 
in a vertical position or which makes an angle of not 
more than forty-five (45) degrees with the vertical. 

225.0 - W - 

Wall-Hung Water Closet - A water closet installed 
in such a way that no part of the water closet touches 
the floor. 



15 



225.0 - 228.0 



UNIFORM PLUMBING CODE 



Waste - See Liquid Waste and Industrial Waste. 

Waste Pipe - A pipe which conveys only liquid 
waste, free of fecal matter. 

Water Conditioning or Treating Device - A device 
which conditions or treats a water supply so as to 
change its chemical content or remove suspended 
solids by filtration. 

Water-Distributing Pipe - In a building or premises, 
a pipe which conveys potable water from the 
building supply pipe to the plumbing fixtures and 
other water outlets. 

Water Hammer Arrestor - A device to absorb 
hydraulic shock, either of the air chamber or 
mechanical device design. 

Water Main (Street Main) - A water-supply pipe for 
public or community use. 

Water Supply System - The building supply pipe, 
the water distributing pipes and the necessary 
connecting pipes, fittings, control valves, and all 
appurtenances carrying or supplying potable water 
in or adjacent to the building or premises. 

Welded Joint or Seam - Any joint or seam obtained 
by the joining of metal parts in the plastic molten 
state. 

Welder, Pipe - A person who specializes in welding 
of pipes and holds a valid certificate of competency 
from a recognized testing laboratory, based on the 
requirements of the A.S.M.E. Boiler and Pressure 
Vessels Code, Section IX. 

Wet Vent - A vent which also serves as a drain. 

Whirlpool Bathtub - A bathtub fixture equipped 
and fitted with a circulating piping system designed 
to accept, circulate and discharge bathtub water 
upon each use. 



226.0 

No definitions. 



-X- 



227.0 



-Y- 



Yoke Vent - A pipe connecting upward from a soil 
or waste stack to a vent stack for the purpose of 
preventing pressure changes in the stacks. 



228.0 

No definitions. 



-Z- 



16 



CHAPTER 3 

GENERAL REGULATIONS 



301.0 Materials - Standards and Alternates 

301.1 Minimum Standards 

301 .1 .1 Approvals. Unless otherwise provided 
for in this Code, all materials, fixtures, or devices 
used or entering into the construction of 
plumbing and drainage systems, or parts 
thereof, shall be submitted to the Administrative 
Authority for approval and shall conform to 
approved applicable standards, or to other 
equivalent standards acceptable to the 
Administrative Authority, and shall be free from 
defects. All pipe, pipe fittings, traps, fixtures, 
material, and devices used in a plumbing system 
shall be listed or labeled by a listing agency or 
shall be approved by the Administrative 
Authority when listing or labeling by a listing 
agency is not available. 

301.1.2 Marking. Each length of pipe and each 
pipe fitting, trap, fixture, material, and device 
used in a plumbing system shall have cast, 
stamped, or indelibly marked on it, the maker's 
mark or name, the weight and the quality of the 
product, when such marking is required by the 
approved standard that applies. All materials and 
devices used or entering into the construction of 
plumbing and drainage systems, or parts thereof, 
shall be marked and identified in a manner 
satisfactory to the Administrative Authority. All 
such marking shall be done by the manufacturer. 
Field marking shall not be acceptable. 

301 .1 .3 Standards. Standards listed or referred 
to in this chapter cover materials which will 
conform to the requirements of this Code, when 
used in accordance with the limitations imposed 
in this or other chapters thereof and their listing. 
Where a standard covers materials of various 
grades, weights, quality, or configurations, there 
may be only a portion of the listed standard 
which is applicable. Design and materials for 
special conditions or materials not provided for 
herein may be used only by special permission 
of the Administrative Authority after the 
Administrative Authority has been satisfied as 
to their adequacy. A list of generally accepted 
plumbing materials standards is included in 
Table 14-1. All IAPMO Installation Standards are 
included at the rear of this Code. 

301 .1 .4 Existing Buildings. In existing buildings 
or premises in which plumbing installations are 
to be altered, repaired, or renovated, the 



Administrative Authority has discretionary 
powers to permit deviation from the provisions of 
this Code, provided that such a proposal to 
deviate is first submitted for proper determination 
in order that health and safety requirements, as 
they pertain to plumbing, shall be observed. 

301.2 Alternate Materials and Methods 

301.2.1 Intent. The provisions of this Code are 
not intended to prevent the use of any alternate 
material or method of construction provided any 
such alternate has been first approved and its 
use authorized by the Administrative Authority. 

301.2.2 Compliance. The Administrative 
Authority may approve any such alternate 
provided that the Administrative Authority finds 
that the proposed design is satisfactory and 
complies with the intent of this Code and the 
material offered is for the purpose intended, at 
least the equivalent of that prescribed in this 
Code, in quality, strength, effectiveness, 
durability, and safety or that the methods of 
installation proposed conform to other acceptable 
nationally recognized plumbing standards. 

301.2.3 Requirements. The Administrative 
Authority shall require that sufficient evidence 
or proof be submitted to substantiate any claims 
that may be made regarding the sufficiency of 
any proposed material or type of construction. 

301.2.4 Testing. When there is insufficient 
evidence to substantiate claims for alternates, the 
Administrative Authority may require tests, as 
proof of compliance, to be made by an approved 
testing agency at the expense of the applicant. 

301 .2.5 Tests shall be made in accordance with 
approved standards, but in the absence of such 
standards, the Administrative Authority shall 
specify the test procedure. 

301.2.6 The Administrative Authority may 
require tests to be made or repeated if, at any 
time, there is reason to believe that any material 
or device no longer conforms to the 
requirements on which its approval was based. 

302.0 Iron Pipe Size (I.P.S.) Pipe 

Iron, steel, brass, and copper pipe shall be standard 
weight iron pipe size (I.P.S.) pipe. 

303.0 Disposal of Liquid Waste 

It shall be unlawful for any person to cause, suffer, or 



17 



303.0-311.2 



UNIFORM PLUMBING CODE 



permit the disposal of sewage, human excrement, or 
other liquid wastes, in any place or manner, except 
through and by means of an approved plumbing and 
drainage system, installed and maintained in 
accordance with the provisions of this Code. 

304.0 Connections to Plumbing System 
Required 

All plumbing fixtures, drains, appurtenances and 
appliances, used to receive or discharge liquid 
wastes or sewage, shall be connected properly to the 
drainage system of the building or premises, in 
accordance with the requirements of this Code. 

305.0 Sewers Required 

305.1 Every building in which plumbing fixtures 
are installed shall have a connection to a public or 
private sewer except as provided in Section 305.2. 

305.2 When a public sewer is not available for use, 
drainage piping from buildings and premises shall 
be connected to an approved private sewage 
disposal system. 

305.3 In cities and /or counties, where the 
installation of building sewers is under the 
jurisdiction of a department other than the 
Administrative Authority, the provisions of this 
Code relating to building sewers need not apply. 

306.0 Damage to Drainage System or Public 
Sewer 

306.1 It shall be unlawful for any person to deposit, 
by any means whatsoever, into any plumbing 
fixture, floor drain, interceptor, sump, receptacle, or 
device, which is connected to any drainage system, 
public sewer, private sewer, septic tank, or cesspool, 
any ashes, cinders, solids, rags, inflammable, 
poisonous or explosive liquids or gases, oils, grease, 
or any other thing whatsoever which would, or 
could cause, damage to the drainage system or 
public sewer. 

306.2 Roofs, inner courts, vent shafts, light wells or 
similar areas having rain water drain, shall discharge 
to the outside of the building or to the gutter and 
shall not be connected to the drainage system unless 
first approved by the Administrative Authority. 

307.0 Industrial Wastes 

307.1 Wastes detrimental to the public sewer system 
or detrimental to the functioning of the sewage 
treatment plant shall be treated and disposed of as 
found necessary and directed by the Administrative 
Authority or other authority having jurisdiction. 



307.2 Sewage or other waste from a plumbing 
system which may be deleterious to surface or 
subsurface waters, shall not be discharged into the 
ground or into any waterway unless it has first been 
rendered innocuous through subjection to some 
acceptable form of treatment. 

308.0 Location 

308.1 Except as otherwise provided in this Code, no 
plumbing system, drainage system, building sewer, 
private sewage disposal system or parts thereof, 
shall be located in any lot other than the lot which is 
the site of the building, structure, or premises served 
by such facilities. 

308.2 No subdivision, sale, or transfer of ownership 
of existing property shall be made in such manner 
that the area, clearance, and access requirements of 
this Code are decreased. 

309.0 Improper Location 

Piping, fixtures, or equipment shall not be so located 
as to interfere with the normal use thereof or with 
the normal operation and use of windows, doors, or 
other required facilities. 

310.0 Workmanship 

310.1 All design, construction, and workmanship 
shall be in conformity with accepted engineering 
practices and shall be of such character as to secure 
the results sought to be obtained by this Code. 

31 0.2 It is unlawful to conceal cracks, holes, or other 
imperfections in materials by welding, brazing, or 
soldering or by using therein or thereon any paint, 
wax, tar, or other leak-sealing or repair agent. 

310.3 Burred ends of all pipe and tubing shall be 
reamed to the full bore of the pipe or tube and all 
chips shall be removed. 

310.4 Installation Practices. Plumbing systems 
shall be installed in a manner conforming to this 
Code and the manufacturer's recommendations. In 
instances where the Code and the manufacturer's 
instructions conflict, the more stringent provisions 
shall prevail. 

311.0 Prohibited Fittings and Practices 

311.1 No double hub fitting, single or double tee 
branch, single or double tapped tee branch, side inlet 
quarter bend, running thread, band, or saddle shall 
be used as a drainage fitting, except that a double 
hub sanitary tapped tee may be used on a vertical 
line as a fixture connection. 

31 1 .2 No drainage or vent piping shall be drilled 



18 



GENERAL REGULATIONS 



311.2-313.10 



and tapped for the purpose of making connections 
thereto, and no cast iron soil pipe shall be threaded. 

31 1 .3 No waste connection shall be made to a closet 
bend or stub of a water closet or similar fixture. 

311.4 Except as hereinafter provided in Sections 
908.0, 909.0 and 910.0, no vent pipe shall be used as a 
soil or waste pipe, nor shall any soil or waste pipe be 
used as a vent. Also, single stack drainage and 
venting systems, with unvented branch lines are 
prohibited. 

311.5 No fitting, fixture and piping connection, 
appliance, device or method of installation which 
obstructs or retards the flow of water, wastes, 
sewage or air in the drainage or venting systems in 
an amount greater than the normal frictional 
resistance to flow, shall be used unless it is indicated 
as acceptable in this Code or is approved by the 
Administrative Authority as having a desirable and 
acceptable function and of ultimate benefit to the 
proper and continuing functioning of the plumbing 
system. The enlargement of a three (3) inch (76 mm) 
closet bend or stub to four (4) inches (102 mm) shall 
not be considered an obstruction. 

311.6 Except for necessary valves, where 
intermembering or mixing of dissimilar metals 
occur, the point of connection shall be confined to 
exposed or accessible locations. 

31 1 .7 All valves, pipes, and fittings shall be installed 
in correct relationship to the direction of flow. 

311.8 Screwed Fittings. Screwed fittings shall be 
ABS, cast iron, copper, copper alloy, malleable iron, 
PVC, steel, or other approved materials. Threads 
shall be tapped out of solid metal or molded in solid 
ABS or PVC. 

312.0 Independent Systems 

The drainage system of each new building and of 
new work installed in any existing building shall be 
separate and independent from that of any other 
building and when available, every building shall 
have an independent connection with a public or 
private sewer. 

Exception: Where one building stands in the 
rear of another building on an interior lot, and 
no private sewer is available or can be 
constructed to the rear building through an 
adjoining court, yard, or driveway, the building 
drain from the front building may be extended 
to the rear building. 

313.0 Protection of Piping, Materials, and 
Structures 

313.1 All piping passing under or through walls 



shall be protected from breakage. All piping passing 
through or under cinders or other corrosive 
materials shall be protected from external corrosion 
in an approved manner. Approved provisions shall 
be made for expansion of hot water piping. Voids 
around piping passing through concrete floors on 
the ground shall be appropriately sealed. 

313.2 All piping in connection with a plumbing 
system shall be so installed that piping or 
connections will not be subject to undue strains or 
stresses, and provisions shall be made for expansion, 
contraction, and structural settlement. No piping 
shall be directly embedded in concrete or masonry. 
No structural member shall be seriously weakened 
or impaired by cutting, notching or otherwise. 

31 3.3 All trenches deeper than the footing of any 
building or structure and paralleling the same 
shall be at least forty-five (45) degrees (0.79 rad) | 
therefrom, unless permission be otherwise granted 
by the Administrative Authority. 

313.4 No building sewer or other drainage piping 
or part thereof, constructed of materials other than 
those approved for use under or within a building, 
shall be installed under or within two (2) feet (610 
mm) of any building or structure, or less than one (1) 
foot (305 mm) below the surface of the ground. 

31 3.5 Piping subject to undue corrosion, erosion, or 
mechanical damage shall be protected in an 
approved manner. 

313.6 No water, soil, or waste pipe shall be installed 
or permitted outside of a building or in an exterior 
wall unless, where necessary, adequate provision is 
made to protect such pipe from freezing. 

313.7 All pipe penetrating floor /ceiling assemblies 
and fire-resistance rated walls or partitions shall be 
protected in accordance with the requirements of the 
Building Code. 

313.8 Waterproofing of Openings. Joints at the 
roof around pipes, ducts, or other appurtenances 
shall be made watertight by the use of lead, copper, 
galvanized iron, or other approved flashings or 
flashing material. Exterior wall openings shall be 
made watertight. Counterflashing shall not restrict 
the required internal cross-sectional area of the vent. 

313.9 Plastic and copper piping run through 
framing members to within one (1) inch (25.4 mm) of 
the exposed framing shall be protected by steel nail 
plates not less than 18 gauge. 

313.10 Sleeves 

313.10.1 Sleeves shall be provided to protect all 
piping through concrete or masonry exterior or 
bearing walls. 



19 



313.10-315.4 



UNIFORM PLUMBING CODE 



313.10.2 Sleeves shall be sized so there is a 
minimum of one-half (1/2) inch (12.7 mm) 
clearance around the pipe and /or insulation. 

313.10.3 Piping through concrete or masonry 
walls shall not be subject to any load from 
building construction. 

313.10.4 In exterior walls, annular space 
between sleeves and pipes shall be filled or 
tightly caulked with coal tar, asphaltum 
compound, lead, or other material found equally 
effective and approved as such by the 
Administrative Authority. 

313.10.5 Any pipe sleeve through a firewall 
shall have the space around the pipe completely 
sealed with an approved fire-resistive material 
in accordance with all other codes. 

313.11 Any structural member weakened or 
impaired by cutting, notching, or otherwise shall be 
reinforced, repaired or replaced so as to be left in a 
safe structural condition in accordance with the 
requirements of the Building Code or as required by 
the proper Administrative Authority. 

313.12 Ratproofing 

313.12.1 Strainer plates on drain inlets shall be 
designed and installed so that no opening is 
greater than one-half (1 /2) inch (127 mm) in the 
least dimension. 

313.12.2 Meter boxes shall be constructed in 
such a manner that rats cannot enter a building 
by following the service pipes from the box into 
the building. 

313.12.3 In or on buildings where openings 
have been made in walls, floors, or ceilings for 
the passage of pipes, they shall be closed and 
protected by the installation of approved metal 
collars securely fastened to the adjoining 
structure. 

314.0 Hangers and Supports 

314.1 Suspended piping shall be supported at 
intervals not to exceed those shown in Table 3-2. 

314.2 All piping shall be supported in such a 
manner as to maintain its alignment, and prevent 
sagging. 

314.3 Piping in the ground shall be laid on a firm 
bed for its entire length. Where support is otherwise 
provided, it shall be acceptable to the Administrative 
Authority. 

314.4 Hangers and anchors shall be of sufficient 
strength to support the weight of the pipe and its 
contents. Piping shall be isolated from incompatible 
materials. 



314.5 All piping, fixtures, appliances, and 
appurtenances shall be adequately supported to the 
satisfaction of the Administrative Authority. 

314.6 Hanger rod sizes shall be no smaller than 
those shown in Table 3-1 . 

314.7 All gas piping shall be supported by metal 
straps or hooks at intervals not to exceed those 
shown in Table 3-2. 

TABLE 3-1 

Pipe and Tube Size Rod Size 

Inches mm Inches mm 

1/2-4 12.7-102 3/ 8 9.5 

5-8 127-203 1/2 12.7 

10-12 254-305 5/ 8 15.9 

314.8 Horizontal cast iron hubless piping that 
exceeds four (4) feet (1219 mm) in length shall be 
supported on each side of the coupling within 
eighteen (18) inches (203 mm) of the joint. 

315.0 Trenching, Excavation, and Backfill 

315.1 All trenches deeper than the footing of any 
building or structure and paralleling the same shall 
be at least forty-five (45) degrees (0.79 rad) 
therefrom, unless permission is otherwise granted by 
the Administrative Authority. 

315.2 Tunneling and driving may be done in yards, 
courts, or driveways of any building site. Where 
sufficient depth is available to permit, tunnels may 
be used between open cut trenches. Tunnels shall 
have a clear height of two (2) feet (610 mm) above 
the pipe and shall be limited in length to one-half 
(1/2) the depth of the trench, with a maximum 
length of eight (8) feet (2438 mm). When pipes are 
driven, the drive pipe shall be at least one (1) size 
larger than the pipe to be laid. 

315.3 Open Trenches. All excavations required to 
be made for the installation of a building-drainage 
system or any part thereof, within the walls of a 
building, shall be open trench work and shall be kept 
open until the piping has been inspected, tested, and 
accepted. 

315.4 All excavations shall be completely backfilled 
as soon after inspection as practicable. Adequate 
precaution shall be taken to insure proper 
compactness of backfill around piping without 
damage to such piping. Trenches shall be backfilled 
in thin layers to twelve (12) inches (305 mm) above 
the top of the piping with clean earth which shall not 
contain stones, boulders, cinderfill, or other materials 
which would damage or break the piping or cause 
corrosive action. Mechanical devices such as 
bulldozers, graders, etc., may then be used to 



20 



GENERAL REGULATIONS 



315.4-316.1 



complete backfill to grade. Fill shall be properly 
compacted. Suitable precautions shall be taken to 
insure permanent stability for pipe laid in filled or 
made ground. 

316.0 Joints and Connections 

316.1 Types of Joints 

316.1.1 Threaded Joints. Threads on iron pipe 
size (IPS) pipe and fittings shall be standard 
taper pipe threads. Threads on tubing shall be 
approved types. Threads on plastic pipe shall be 
factory cut or molded. Threaded plastic pipe 
shall be Schedule 80 minimum wall thickness. 



Tubing threads shall conform to fine tubing 
thread standards. When a pipe joint material is 
used, it shall be applied only on male threads 
and such materials shall be approved types, 
insoluble in water and nontoxic. Cleanout plugs 
and caps shall be lubricated with water- 
insoluble, non-hardening material or tape. 

316.1.2 Wiped Joints. Joints in lead pipe or 
fittings or between lead pipe or fittings and 
brass or copper pipe, ferrules, solder nipples or 
traps, shall be full-wiped joints. Wiped joints 
shall have an exposed surface on each side of a 
joint not less than three-fourths (3/4) inch (19.1 



TABLE 3-2 


Materials 


Type of Joints 


Horizontal 


Vertical 


Cast Iron Hub and Spigot 


Lead and Oakum 


5 feet (1524 mm), except may be 10 feet (3048 
mm) where 10 foot (3048 mm) lengths are 
installed 1.2. 3 


Base and each floor not to exceed 
15 feet (4572 mm) 


Compression Gasket 


Every other joint, unless over 4 feet (1219 mm), 
then support each joint ^ 


Base and each floor not to exceed 
15 feet (4572 mm) 


Cast Iron Hubless 


Shielded Coupling 


Every other joint, unless over 4 feet (1249 mm), 
then support each joint 1 £3.4 


Base and each floor not to exceed 
15 feet (4572 mm) 


Copper Tube and Pipe 


Soldered, Brazed or 
Welded 


1-1/2 inch (38 mm) and smaller, 6 feet (1829 mm), 
2 inch (51 mm) and larger, 10 feet (3048 mm) 


Each floor, not to exceed 10 feet 
(3048 mm) 5 


Steel and Brass Pipe for Water 
orDWV 


Threaded or Welded 


3/4 inch (19 mm) and smaller, 10 feet (3048 mm), 
1 inch (25.4 mm) and larger, 12 feet (3658 mm) 


Every other floor, not to exceed 25 
feet (7620 mm) 5 


Steel, Brass and Tinned Copper 
Pipe for Gas 


Threaded or Welded 


1/2 inch (12.7 mm), 6 feet (1829 mm) 3/4 

(19.1 mm) and 1 inch (25.4 mm), 8 feet (2438 mm), 

1-1/4 inch (32 mm) and larger, 10 feet (3048 mm) 


1/2 inch (12.7 mm), 6 feet (1829 
mm), 3/4 (19 mm) and 1 inch (25.4 
mm), 8 feet (2438 mm), 1*1/4 inch 
(32 mm) and larger, every floor level 


Schedule 40 PVC and 
ABS DWV 


Solvent Cemented 


All sizes, 4 feet (1219 mm). Allow for expansion 
every 30 feet (9144 mm) 3. 6 


Base and each floor. Provide mid- 
story guides. Provide for expansion 
every 30 feet (9144 mm) 6 


CPVC 


Solvent Cemented 


1 inch (25.4 mm) and smaller, 3 feet (914 mm), 
1-1/4 inch (32 mm) and larger, 4 feet (1219 mm) 


Base and each ftoor. Provide mid- 
story guides 6 


Lead 


Wiped or Burned 


Continuous support 


Not to exceed 4 feet (1219 mm) 


Copper 


Mechanical 


In accordance with standards acceptable to the Administrative Authority 


Steel & Brass 


Mechanical 


In accordance with standards acceptable to the Administrative Authority 


1 Support adjacent to joint, not to exceed eighteen (1 8) inches (457 mm). 

2 Brace at not more than forty (40) foot (12192 mm) intervals to prevent horizontal movement. 

3 Support at each horizontal branch connection. 

4 Hangers shall not be placed on the coupling. 

5 Vertical water lines may be supported in accordance with recognized engineering principles with regard to expansion and contraction, when first 
approved by the Administrative Authority. 

6 See the appropriate IAPMO Installation Standard for expansion and other special requirements. 



21 



316.1 -317.0 



UNIFORM PLUMBING CODE 



mm) and at least as thick as the material being 
joined. Wall or floor flange lead-wiped joints 
shall be made by using a lead ring or flange 
placed behind the joint at wall or floor. Joints 
between lead pipe and cast iron, steel or 
wrought iron shall be made by means of a 
caulking ferrule or soldering nipple. 

316.1.3 Soldered Joints. Joints in copper 
tubing shall be made by the appropriate use of 
approved copper or copper alloy fittings. 
Surfaces to be joined by soldering shall be 
cleaned bright by manual or mechanical means. 
The joints shall be properly fluxed with an 
approved type flux, and made up with 
approved solder. All solder and fluxes shall be 
manufactured to approved standards. Solders 
and fluxes with a lead content which exceeds 
two-tenths (0.20) of one (1) percent are 
prohibited in piping systems used to convey 
potable water. 

316.1.4 Flexible Compression Factory- 
Fabricated Joints. When pipe is joined by 
means of flexible compression joints, such joints 
shall conform to approved standards and shall 
not be considered as slip joints. 

316.1.5 Solvent Cement Plastic Pipe Joints. 

Plastic pipe and fittings designed to be joined by 
solvent cementing shall comply with 
appropriate IAPMO Installation Standards. 

ABS pipe and fittings shall be cleaned and 
then joined with listed solvent cement(s). 

CPVC and PVC pipe and fittings shall be 
cleaned and joined with listed primer(s) and 
solvent cement(s). 

316.1.6 Brazing and Welding. Brazing and 
welding shall conform to the applicable 
standard(s) in Table 14-1. All brazing on 
medical gas systems shall be performed by 
certified installers meeting the requirements 
of ANSI/ASME Boiler and Pressure Vessel 
Code, Section IX, Welding and Brazing 
Qualifications or AWS B2.2, Standard for 
Brazing Procedure and Performance 
Qualifications. 

316.1.7 Pressure-Lock Type Connection. A 

mechanical connection which depends on an 
internal retention device to prevent pipe or 
tubing separation. Connection is made by 
inserting the pipe or tubing into the fitting to a 
prescribed depth. 

316.2 Special Joints 

316.2.1 Copper Tubing to Screw Pipe Joints. 

Joints from copper tubing to threaded pipe shall 
be made by the use of brass adapter fittings. The 



joint between the copper tubing and the fitting 
shall be properly sweated or soldered, and the 
connection between the threaded pipe and the 
fitting shall be made with a standard pipe size 
screw joint. Solder shall conform to the 
requirements of Section 316.1.3. 

316.2.2 Unions. Approved unions may be used 
in drainage work when accessibly located in the 
trap seal or between a fixture and its trap; in the 
vent system, except underground or in wet 
vents; at any point in the water supply system 
and in gas piping as permitted by Section 
1211.10. 

316.2.3 Plastic Pipe to Other Materials. When 
connecting plastic pipe to other types of piping 
use only approved types of fittings and adapters 
designed for the specific transition intended. 

316.3 Flanged Fixture Connections 

316.3.1 Fixture connections between drainage 
pipes and water closets and floor outlet service 
sinks and urinals shall be made by means of 
approved brass, hard lead, ABS, PVC, or iron 
flanges caulked, soldered, solvent cemented, or 
screwed to the drainage pipe. The connection 
shall be bolted with an approved gasket, washer, 
or setting compound between the fixture and the | 
connection. The bottom of the flange shall be set 
on an approved firm base. 

316.3.2 Closet bends or stubs must be cut off so 
as to present a smooth surface even with the top of 
the closet ring before rough inspection is called. 

316.3.3 Wall-mounted water closet fixtures 
shall be securely bolted to an approved carrier 
fitting. The connecting piping between the 
carrier fitting and the fixture shall be an 
approved material and designed to 
accommodate an adequately sized gasket. 
Gasket material shall be neoprene, felt, or similar 
approved types. 

316.4 Prohibited Joints and Connections 

316.4.1 Drainage System. Any fitting or 
connection which has an enlargement, chamber 
or recess with a ledge, shoulder or reduction of 
pipe area, that offers an obstruction to flow 
through the drain is prohibited. 

316.4.2 No fitting or connection that offers 
abnormal obstruction to flow shall be used. The 
enlargement of a three (3) inch (76 mm) closet 
bend or stub to four (4) inches (102 mm) shall 
not be considered an obstruction. 

317.0 Increasers and Reducers 

Where different sizes of pipes or pipes and fittings 



22 



GENERAL REGULATIONS 



317.0-319.4 



are to be connected, the proper size increasers or 
reducers or reducing fittings shall be used between 
the two sizes. Brass or cast iron body cleanouts shall 
not be used as a reducer or adapter from cast iron 
drainage pipe to iron pipe size (IPS) pipe. 

318.0 Food Handling Establishments 

Food or drink shall not be stored, prepared or 
displayed beneath overhead soil or drain pipes, 
unless those areas are protected against leakage or 
condensation from such pipes reaching the food or 
drink as described below for new construction. 

" Where building design requires that soil or drain 
pipes be located over such areas, the installation 
shall be made with the least possible number of 
joints and shall be installed so as to connect to a 
vertical stack at the nearest wall or vertical building 

| support with the provisions as follows: 

318.1 All openings through floors over such 
areas shall be provided with sleeves securely 
bonded to the floor construction and projecting 
not less than three-quarters (3/4) inch (19.1 mm) 
above top of the finished floor with space 
between sleeve and pipe or duct sealed. 

318.2 Floor and shower drains installed above 
such areas shall be equipped with integral 
seepage pans. 

318.3 Plumbing fixtures, except bath tubs, in 
rooms located above such areas shall be of the 
wall-mounted type. Tubs shall have waste and 
overflow connections made above floor and 
piped to the trap below the floor. Connections 
through floors and traps shall conform with all 
other provisions of this regulation. No floor 
openings, other than sleeves for waste pipe, will 
be permitted for tubs. 

318.4 All other soil or drain pipes shall be of an 
approved material as listed in Table 14-1 and 
Section 701.0. All materials shall conform to 
established standards. Cleanouts shall be 
extended through the floor construction above. 

318.5 Soil and drain pipes located above such 
areas shall be subjected to a standing water test 
of not less than twenty-five (25) feet (7620 mm). 

318.6 Piping subject to operation at 
temperatures that will form condensation on the 
exterior of the pipe shall be thermally insulated. 

318.7 Where pipes are installed in ceilings 
above such areas, the ceiling shall be of the 
removable type, or shall be provided with 
access panels in order to form a ready access for 
inspection of piping. 

318.8 In lieu of the above, any other method 



may be approved by the Administrative 
Authority. 

319.0 Test Gauges. Tests required by this Code, 
which are performed utilizing dial gauges, shall be 
limited to gauges having the following pressure 
graduations or incrementations. 

319.1 Required pressure tests of ten (10) psi (69 
kPa) or less shall be performed with gauges of 
1/10 pound (0.7 kPa) incrementation or less. 

319.2 Required pressure tests exceeding ten (10) 
pounds (69 kPa) but less than one hundred (100) 
psi (689 kPa) shall be performed with gauges of 
one (1) psi (6.9 kPa) incrementation or less. 

319.3 Required pressure tests exceeding one 
hundred (100) psi (689 kPa) shall be performed 
with gauges incremented for two (2) percent or 
less of the required test pressure. 

319.4 Test gauges shall have a pressure range 
not greater than twice the test pressure applied. 



23 



UNIFORM PLUMBING CODE 



~> 



24 



CHAPTER 4 

PLUMBING FIXTURES AND FIXTURE FITTINGS 



401.0 Materials - General Requirements 

401 .1 Quality of Fixtures. Plumbing fixtures shall be 
constructed of dense, durable, non-absorbent 
materials and shall have smooth, impervious surfaces, 
free from unnecessary concealed fouling surfaces. 
Except as permitted elsewhere in this Code, all 
fixtures shall conform in quality and design to 
nationally recognized applicable standards or to other 
approved standards acceptable to the Administrative 
Authority. A list of generally accepted plumbing 
fixture standards is included in Table 14-1. 

401.2 Lead. See Table 14-1. Sheet lead shall be not 
less than the following: 

For safe pans - not less than four (4) pounds per 
square foot (19.5 kg/m 2 ) or 1 / 16 inch (1.6 mm) thick. 

402.0 Water-Conserving Fixtures and Fittings 

402.1 The maximum discharge flow rates for 
plumbing fixture fittings shall be in accordance with 
applicable standards referenced in Chapter 3 and 
listed in Table 14-1. 

402.2 Flush volumes for low consumption and 
water saver water closets and urinals shall be in 
accordance with applicable standards referenced in 
Chapter 3 and listed in Table 14-1. 

402.3 Water Closets. Water closets, either flush 
tank, flushometer tank, or flushometer valve 
operated, shall have an average consumption of not 
more than 1.6 gallons (6.1 liters) of water per flush. 

402.4 Urinals. Urinals shall have an average water 
consumption of not more than 1.0 gallon (3.8 liters) 
of water per flush. 

Exception: If approved by the Administrative 
Authority, blowout urinals may be installed for 
public use in stadiums, race courses, 
fairgrounds, and other structures used for 
outdoor assembly and for similar uses. 

402.5 Non-Metered Faucets. Lavatory faucets shall 
be equipped with aerators and shall be designed and 
manufactured so that they will not exceed a water 
flow rate of 2.5 gallons (9.5 liters) per minute. 

402.6 Metered Faucets. Self-closing or self-closing 
metering faucets shall be installed on lavatories 
intended to serve the transient public, such as those 
in, but not limited to, service stations, train stations, 
airports, restaurants and convention halls. Metered 
faucets shall deliver not more than 0.25 gallons (1.0 
liter) of water per use. 



402.7 Kitchen Faucets. Faucets for kitchen sinks 
shall be equipped with aerators and shall be 
designed and manufactured so that they will not 
exceed a water flow rate of 2.5 gallons (9.5 liters) per 
minute. 

402.8 Shower Heads. Shower heads shall be 
designed and manufactured so that they will not 
exceed a water supply flow rate of 2.5 gallons (9.5 
liters) per minute. 

Exception: Emergency safety showers. 

402.9 Installation. Water-conserving fixtures shall 
be installed in strict accordance with the 
manufacturers' instructions to maintain their rated 
performance. 

403.0 Materials - Alternates 

Special use fixtures may be made of soapstone, 
chemical stoneware, or may be lined with lead, 
copper base alloy, nickel-copper alloy, corrosion- 
resisting steel, or other materials especially suited for 
the use for which the fixture is intended. 

403.1 Zinc Alloy Components. Zinc alloy 
components shall meet the applicable nationally 
recognized standards and shall be used in 
accordance with their listing. 

404.0 Overflows 

When any fixture is provided with an overflow, the 
waste shall be so arranged that the standing water in 
the fixture cannot rise in the overflow when the 
stopper is closed or remain in the overflow when the 
fixture is empty. The overflow pipe from a fixture 
shall be connected on the house or inlet side of the 
fixture trap, except that overflow on flush tanks may 
discharge into the water closets or urinals served by 
them, but it shall be unlawful to connect such 
overflows with any other part of the drainage 
system. 

405.0 Strainers and Connections 

405.1 Strainers. All plumbing fixtures, other than 
water closets and siphon action washdown or 
blowout urinals, shall be equipped with approved 
strainers having an approved waterway area. 
Strainers serving shower drains shall have a 
waterway equivalent to the area of the tailpiece. 

405.2 Connections. Fixtures having concealed slip 
joint connections shall be provided with an access 



25 



405.2 - 408.6 



UNIFORM PLUMBING CODE 



panel or utility space at least twelve (12) inches (305 
mm) in its least dimension and so arranged without 
obstructions as to make such connections readily 
accessible for inspection and repair. 

405.3 Continuous wastes and fixture tailpieces shall 
be constructed from the materials specified in 
Section 701.0 for drainage piping, provided, 
however, that such connections where exposed or 
accessible may be of seamless drawn brass not less 
than No. 20 B&S Gauge (0.032 inches) (0.8 mm). Each 
such tailpiece, continuous waste, or waste and 
overflow shall not be less than one and one-half (1- 
1/2) inches (38 mm) O.D. for sinks, dishwashers, 
laundry tubs, bathtubs, urinals and similar fixtures, 
and not less than one and one-quarter (1-1/4) inches 
(32 mm) for lavatories, drinking fountains, and 
similar small fixtures. 

405.4 Approved wye or other directional type 
branch fittings shall be installed in all continuous 
wastes connecting or receiving the discharge from 
food waste disposal units, dishwashers, 
clotheswashers, or other force discharge fixtures or 
appliances. No dishwasher drain shall be connected 
to a sink tailpiece, continuous waste or trap on the 
discharge side of a food waste disposal unit. 

406.0 Prohibited Fixtures 

406.1 Water closets having an invisible seal or an 
unventilated space or having walls which are not 
thoroughly washed at each discharge shall be 
prohibited. Any water closet which might permit 
siphonage of the contents of the bowl back into the 
tank shall be prohibited. Drinking fountains shall not 
be installed in public toilet rooms. 

406.2 Prohibited Urinals. Floor-type and wall- 
hung-type trough urinals shall be prohibited. Urinals 
which have an invisible seal or which have an 
unventilated space or wall which is not thoroughly 
washed at each discharge shall be prohibited. 

406.3 Fixed wooden, concrete, cement, or tile wash 
trays or sinks for domestic use shall not be installed 
in any building designed or used for human 
habitation. No sheet metal lined wooden bathtub 
shall be installed or reconnected. No dry or chemical 
closet (toilet) shall be installed in any building used 
for human habitation, unless first approved by the 
Health Officer. 

406.4 Concealed Fouling Surfaces. Fixtures shall 
be so designed that they are free from concealed 
fouling surfaces. 

407.0 Special Fixtures and Specialties 

407.1 Water Connections. Baptisteries, ornamental 



and lily ponds, aquaria, ornamental fountain basins, 
and similar constructions when provided with water 
supplies shall be protected from back-siphonage. 

407.2 Restaurant kitchen and other special use sinks 
may be made of approved type bonderized and 
galvanized sheet steel of not less than No. 16 U.S. 
Gauge (0.0625 inches) (1.6 mm). All sheet metal 
plumbing fixtures shall be adequately designed, 
constructed, and braced in an approved manner to 
satisfactorily accomplish their intended purpose. 

407.3 Approved. Specialties requiring water and 
waste connections shall be submitted for approval of 
the Administrative Authority. 

408.0 Installation 

408.1 Cleaning. Plumbing fixtures shall be installed 
in a manner to afford easy access for repairs and 
cleaning. Where practical, all pipes from fixtures 
shall be run to the nearest wall. 

408.2 Joints. Where a fixture comes in contact with 
the wall or floor, the joint between the fixture and 
the wall or floor shall be made watertight. 

408.3 Securing Fixtures. Floor outlet or floor 
mounted fixtures shall be rigidly secured to the 
drainage connection and to the floor when so 
designed, by screws or bolts of copper, brass, or 
other equally corrosion resistant material. 

408.4 Wall-Hung Fixtures. Wall-hung fixtures shall 
be rigidly supported by metal supporting members 
so that no strain is transmitted to the connections. 
Flush tanks and similar appurtenances shall be 
secured by approved non-corrosive screws or bolts. 

408.5 Securing Floor-Mounted, Back-Outlet Water 
Closet Bowls. Floor-mounted, back-outlet water 
closet bowls shall be set level with an angle of ninety 
(90) degrees (1.58 rad) between the floor and wall at 
the centerline of the fixture outlet. The floor and wall 
shall have a flat mounting surface for at least five (5) 
inches (127 mm) to the right and left of the fixture 
outlet centerline. The fixture shall be secured to the 
wall outlet flange or drainage connection, and to the 
floor by corrosion-resistant screws or bolts. The closet 
flange shall be secured to a firm base. 

Where floor-mounted, back-outlet water closets 
are used, the soil pipe shall not be less than three (3) 
inches (76 mm) in diameter. Offset, eccentric, or 
reducing floor flanges shall not be used. 

408.6 Setting. Fixtures shall be set level and in 
proper alignment with reference to adjacent walls. No 
water closet or bidet shall be set closer than fifteen (15) 
inches (381mm) from its center to any side wall or 
obstruction nor closer than thirty (30) inches (762 mm) 
center to center to any similar fixture. The clear space 



26 



PLUMBING FIXTURES AND FIXTURE FITTINGS 



408.6-412.1 



in front of any water closet or bidet shall not be less 
than twenty-four (24) inches (610 mm). No urinal shall 
be set closer than twelve (12) inches (305 mm) from its 
center to any side wall or partition nor closer than 
twenty-four (24) inches (610 mm) center to center. 

408.7 Installations for the Handicapped. Where 
facilities for the handicapped are required in 
applicable building regulations, the facilities shall be 
installed in accordance with those regulations. 

408.8 Supply Fittings. The supply lines or fittings 
for every plumbing fixture shall be so installed as to 
prevent backflow as required in Chapter 6. 

409.0 Water Closets 

409.1 Water closet bowls for public use shall be of 
the elongated type. In nurseries, schools, and other 
similar places where plumbing fixtures are provided 
for the use of children under six (6) years of age, 
water closets shall be of a size and height suitable for 
children's use. All water closets shall be equipped 
with seats as required below. 

409.2 Water Closet Seats 

I 409.2.1 Water closet seats shall be of smooth 

non-absorbent material. 

409.2.2 All water closet seats, except those 
within a single dwelling unit, shall be of the 
open front type. 

409.2.3 Water closet seats shall be properly 
sized for the water closet bowl type. 

409.2.4 Seats for use in public buildings shall 
conform to the standard listed in Table 14-1. 

410.0 Urinals 

Every water supply to a urinal shall be protected by 
an approved type vacuum breaker or other 
approved backflow prevention device as described 
in Section 603.3. 

411.0 Flushing Devices for Water Closets and 
Urinals 

411.1 Flushing Devices Required. Each water 
closet, urinal, clinic sink, or other plumbing fixture 
which depends on trap siphonage to discharge its 
waste contents shall be provided with a flushometer 
valve, flushometer tank or flush tank designed and 
installed so as to supply water in sufficient quantity 
and rate of flow to flush the contents of the fixture to 
which it is connected, to cleanse the fixture, and to 
refill the fixture trap, without excessive water use. 
Flushing devices shall meet anti-siphon 
requirements required in Chapter 6. 

411.2 Automatic Flushing Tanks. Tanks flushing 



more than one (1) urinal shall be automatic in 
operation and of sufficient capacity to provide the 
necessary volume to flush and properly cleanse all 
urinals simultaneously. Automatically controlled 
flushometer valves may be substituted for flush tanks. 

411.3 Flushometer Valves. No manually 
controlled flushometer valve shall be used to flush 
more than one (1) urinal and each such urinal 
flushometer valve shall be an approved, self-closing 
type discharging a predetermined quantity of water. 
Flushometers shall be installed so that they will be 
accessible for repair. Flushometer valves shall not be 
used where the water pressure is insufficient to 
properly operate them. When the valve is operated, 
it shall complete the cycle of operation automatically, 
opening fully and closing positively under the line 
water pressure. Each flushometer shall be provided 
with a means for regulating the flow through it. 

411.4 Water Supply for Flush Tanks. An adequate 
quantity of water shall be provided to flush and clean 
die fixture served. The water supply for flushing tanks 
and flushometer tanks equipped for manual flushing 
shall be controlled by a float valve or other automatic 
device designed to refill the tank after each discharge 
and to completely shut off the water flow to the tank 
when the tank is filled to operational capacity. Water 
closets in which the flush valve seat in the gravity 
flush tank is not one (1) inch (25.4 mm) or more above 
the flood level rim of the closet bowl shall have a 
ballcock installed within a sheath or in a separate and 
isolated compartment of the tank, both of which shall 
have visible discharge onto the floor in case of failure. 
Provision shall be made to automatically supply 
water to the fixture so as to refill the trap seal after 
each flushing. The water supply to flush tanks 
equipped for automatic flushing shall be controlled by 
a suitable timing device. 

411.5 Flush Valves in Flush Tanks. Flush valve 
seats in tanks for flushing water closets shall be at least 
one (1) inch (25.4 mm) above the flood level rim of the 
bowl connected thereto, except in approved water 
closet and flush tank combinations designed so that 
when the tank is flushed and the fixture is clogged or 
partially clogged, the flush valve closes tightly so that 
water does not spill continuously over the rim of the 
bowl or backflow from the bowl to the tank. 

41 1 .6 Overflows in Flush Tanks. Flush tanks shall be 
provided with overflows discharging into the water 
closet or urinal connected thereto and shall be of 
sufficient size to prevent tank flooding at the maximum 
rate at which the tank is supplied with water. 

412.0 Floor Drains and Shower Stalls 

412.1 Floor drains shall be considered plumbing 



27 



412.1 -412.8 



UNIFORM PLUMBING CODE 



fixtures and each such drain shall be provided with 
an approved type strainer having a waterway 
equivalent to the area of the tailpiece. Floor drains, 
floor receptors, and shower drains shall be of an 
approved type, suitably flanged to provide a 
watertight joint in the floor. 

412.2 Location of Floor Drains. Floor drains shall 
be installed in the following areas: 

412.2.1 Toilet rooms containing two (2) or more 
water closets or a combination of one (1) water 
closet and one (1) urinal, except in a dwelling 

| unit. The floor shall slope toward the floor drains. 

41 2.2.2 Commercial kitchens. 

412.2.3 Laundry rooms in commercial 
| buildings and common laundry facilities in 

multi-family dwelling buildings. 

412.3 Food Storage Areas. If drains are provided 
in storerooms, walk-in freezers, walk-in coolers, 
refrigerated equipment, or other locations where 
food is stored, they shall have indirect waste piping. 
Separate waste pipes shall be run from each food 
storage area, each with an indirect connection to the 
building sanitary drainage system. Traps shall be 
provided if required under Section 801.2.2 of this 
Code and shall be vented. 

Indirect drains may be located in freezers or other 
spaces where freezing temperatures are maintained, 
provided that traps are not required in this Code. 
Otherwise, the floor of the freezer shall be sloped to a 
floor drain located outside of the storage compartment 

412.4 Floor Slope. Floors shall be sloped to floor 
drains where drainage occurs on a regular or 
frequent basis, or as otherwise required by the 
Administrative Authority. 

412.5 Shower receptors are plumbing fixtures and 
shall conform to the general requirements therefor 
contained in Section 401.0. Each such shower receptor 
shall be constructed of vitrified china or earthenware, 
ceramic tile, porcelain enameled metal or of such 
other material as may be acceptable to the 
Administrative Authority. No shower receptor shall 
be installed unless it conforms to acceptable 
standards as referenced in Chapter 3 and listed in 
Table 14-1 or until a specification or a prototype or 
both of such receptor has first been submitted to and 
approval obtained from the Administrative Authority. 

41 2.6 Each shower receptor shall be an approved type 
and be so constructed as to have a finished dam, curb, 
or threshold which is at least one (1) inch (25.4 mm) 
lower than the sides and back of such receptor. In no 
case shall any dam or threshold be less than two (2) 
inches (51 mm) or more than nine (9) inches (229 mm) 
in depth when measured from the top of the dam or 
threshold to the top of the drain. Each such receptor 



shall be provided with an integral nailing flange to be 
located where the receptor meets the vertical surface of 
the finished interior of the shower compartment. The 
flange shall be watertight and extend vertically a 
minimum of one (1) inch (25.4 mm) above the top of 
the sides of the receptor. The finished floor of the 
receptor shall slope uniformly from the sides toward 
the drain not less than one-quarter (1/4) inch per foot 
(20.9 mm/m), nor more than one-half (1/2) inch per 
foot (41.8 mm/m). Thresholds shall be of sufficient 
width to accommodate a minimum twenty-two (22) 
inch (559 mm) door. 

Exception: Showers which are designed to 
comply with the accessibility standards listed in 
Table 14-1. 

412.7 All shower compartments, regardless of 
shape, shall have a minimum finished interior of one 
thousand twenty-four (1024) square inches (0.66 m 2 ) 
and shall also be capable of encompassing a thirty 
(30) inch (762 mm) circle. The minimum required 
area and dimensions shall be measured at a height 
equal to the top of the threshold and at a point 
tangent to its centerline. The minimum area and 
dimensions shall be maintained to a point seventy 
(70) inches (1778 mm) above the shower drain outlet 
with no protrusions other than the fixture valve or 
valves, shower head, soap dishes, shelves and safety 
grab bars or rails. Fold-down seats in accessible 
shower stalls shall be permitted to protrude into the 
thirty (30) inch (0.76 m) circle. 

Exception: Showers which are designed to 
comply with the accessibility standards listed in 
Table 14-1. 

412.8 When the construction of on-site built-up shower 
receptors is permitted by the Administrative Authority, 
one of the following means shall be employed: 

(1) Shower receptors built directly on the 
ground: 

Shower receptors built directly on the ground 
shall be watertight and shall be constructed from 
approved type dense, non-absorbent and non- 
corrosive materials. Each such receptor shall be 
adequately reinforced, shall be provided with an 
approved flanged floor drain designed to make 
a watertight joint in the floor, and shall have 
smooth, impervious, and durable surfaces. 

(2) Shower receptors built above ground: 

When shower receptors are built above ground 
the sub-floor and rough side of walls to a height of 
not less than three (3) inches (76 mm) above the 
top of the finished dam or threshold shall be first 
lined with sheet lead or copper* or shall be lined 
with other durable and watertight materials. 

All lining materials shall be pitched one-quarter 



28 



PLUMBING FIXTURES AND FIXTURE FITTINGS 



412.8-413.3 



(1/4) inch per foot (20.9 mm/m) to weep holes in the 
subdrain of a smooth and solidly formed sub-base. 
All such lining materials shall extend upward on the 
rough jambs of the shower opening to a point no less 

than three (3) inches (76 mm) above the top of the 
finished dam or threshold and shall extend outward 
over the top of the rough threshold and be turned 
over and fastened on the outside face of both the 
rough threshold and the jambs. 

Non-metallic shower sub-pans or linings may be 
built-up on the job site of not less than three (3) layers 
of standard grade fifteen (15) pound (6.8 kg) asphalt 
impregnated roofing felt. The bottom layer shall be 
fitted to the formed sub-base and each succeeding 
layer thoroughly hot mopped to that below. All 
corners shall be carefully fitted and shall be made 
strong and watertight by folding or lapping, and each 
corner shall be reinforced with suitable webbing hot- 
mopped in place. All folds, laps, and reinforcing 
webbing shall extend at least four (4) inches (102 mm) 
in all directions from the corner and all webbing shall 
be of approved type and mesh, producing a tensile 
strength of not less than fifty (50) psi (344.5 kPa) in 
either direction. Non-metallic shower sub-pans or 
linings may also consist of multi-layers of other 
approved equivalent materials suitably reinforced 
and carefully fitted in place on the job site as 
elsewhere required in this section. 

Linings shall be properly recessed and fastened 
to approved backing so as not to occupy the space 
required for the wall covering and shall not be nailed 
or perforated at any point which may be less than 
one (1) inch (25.4 mm) above the finished dam or 
threshold. An approved type sub-drain shall be 
installed with every shower sub-pan or lining. Each 
such sub-drain shall be of the type that sets flush 
with the sub-base and shall be equipped with a 
clamping ring or other device to make a tight 
connection between the lining and the drain. The 
sub-drain shall have weep holes into the waste line. 
The weep holes located in the subdrain clamping 
ring shall be protected from clogging. 

All shower lining materials shall conform to 
approved standards acceptable to the Administrative 
Authority. 



*Lead and copper sub-pans or linings shall be insulated 
from all conducting substances other than their connecting 
drain by fifteen (15) pound (6.8 kg) asphalt felt or its 
equivalent and no lead pan or liner shall be constructed of 
material weighing less than four (4) pounds per square foot 
(19.5 kg/m 2 ). Copper pans or liners shall be at least No. 24 
B & S Gauge (0.02 inches) (0.5 mm). Joints in lead pans or 
liners shall be burned. Joints in copper pans or liners shall 
be soldered or brazed. 



412.8.1 Tests for Shower Receptors. Shower 
receptors shall be tested for watertightness by 
filling with water to the level of the rough 
threshold. The test plug shall be so placed that 
both upper and under sides of the sub-pan shall 
be subjected to the test at the point where it is 
clamped to the drain. 

412.9 Floors of public shower rooms shall have a non- 
skid surface and shall be drained in such a manner that 
waste water from one bather will not pass over areas 
occupied by other bathers. Gutters in public or gang 
shower rooms shall have rounded corners for easy 
cleaning and shall be sloped not less than two (2) 
percent toward drains. Drains in gutters shall be 
spaced not more than eight (8) feet (2438 mm) from side 
walls nor more than sixteen (16) feet (4879 mm) apart. 

412.10 DELETED 

412.11 Location of Valves and Heads. Control 
valves and shower heads shall be located on the 
sidewall of shower compartments or be otherwise 
arranged so that the showerhead does not discharge 
directly at the entrance to the compartment and the 
bather can adjust the valves prior to stepping into 
the shower spray. 

412.12 Water Supply Riser. Every water supply 
riser from the shower valve to the shower head 
outlet whether exposed or not, shall be securely 
attached to the structure. 

413.0 Minimum Number of Required Fixtures 

413.1 Fixture Count. Plumbing fixtures shall be 
provided for the type of building occupancy and in 
the minimum number shown in Table 4-1. 

413.2 Access to Fixtures 

413.2.1 In multi-story buildings, accessibility to 
the required fixtures shall not exceed one (1) 
vertical story. 

413.2.2 Fixtures accessible only to private 
offices shall not be counted to determine 
compliance with this section. 

413.3 Separate Facilities 

Separate toilet facilities shall be provided for each sex. 
Exceptions: 

(1 ) Residential installations. 

(2) In occupancies serving ten (10) or fewer 
people, one (1) toilet facility, designed for use by 
no more than one (1) person at a time, shall be 
permitted for use by both sexes. 

(3) In business and mercantile occupancies with 
a total floor area of fifteen hundred (1500) square 
feet (139.5 m 2 ) or less, one (1) toilet facility, 
designed for use by no more than one (1) person 



29 



413.3-420.0 



UNIFORM PLUMBING CODE 



at a time, shall satisfy the requirements for 
serving customers and employees of both sexes. 

413.4 Fixture Requirements for Special 
Occupancies 

413.4.1 Additional fixtures may be required 
when unusual environmental conditions or 
special activities are encountered. 

413.4.2 In food preparation areas, fixture 
requirements may be dictated by health codes. 

413.4.3 Types of occupancy not shown in Table 
4-1 shall be considered individually by the 
Administrative Authority. 

413.5 Facilities in Mercantile and Business 
Occupancies Serving Customers 

413.5.1 Requirements for customers and 
employees shall be permitted to be met with a 
single set of restrooms accessible to both groups. 
The required number of fixtures shall be the 
greater of the required number for employees or 
the required number for customers. 

413.5.2 Fixtures for customer use shall be 
permitted to be met by providing a centrally 
located facility accessible to several stores. The 
maximum distance from entry to any store to 
this facility shall not exceed five hundred (500) 
feet (152.4 m). 

413.5.3 In stores with a floor area of one 
hundred fifty (150) square feet (13.9 m 2 ) or less, 
the requirement to provide facilities for 
employees shall be permitted to be met by 
providing a centrally located facility accessible 
to several stores. The maximum distance from 
entry to any store to this facility shall not exceed 
three hundred (300) feet (91.4 m). 

413.6 Food Service Establishments. Food service 
establishments with an occupant load of one 
hundred (100) or more shall be provided with 
separate facilities for employees and customers. 
Customer and employee facilities may be combined 
for occupant loads less than one hundred (100). 

413.7 Toilet Facilities for Workers 

Suitable toilet facilities shall be provided and 
maintained in a sanitary condition for the use of 
workers during construction. 

414.0 Fixtures for the Handicapped 

Plumbing fixtures for the handicapped shall conform 
to the appropriate standards referenced in Table 14-1 
of this Code. 

415.0 Whirlpool Bathtubs 

Unless otherwise listed, all whirlpool bathtubs shall 



comply with the following requirements: 

415.1 A removable panel of sufficient dimension 
shall be provided to access the pump. 

41 5.2 The circulation pump shall be located above 
the crown weir of the trap. 

415.3 The pump and the circulation piping shall be 
self-draining to minimize water retention. 

41 5.4 Suction fittings on whirlpool bathtubs shall 
comply with the listed standards. 

416.0 Installation of Fixture Fittings 

Faucets and diverters shall be installed so that the 
flow of hot water from the fittings corresponds to the 
left hand side of the fitting. 

417.0 Bidets 

417.1 Materials. Bidets shall conform to the 
standards listed in Table 14-1. 

417.2 Backflow Protection. The water supply to 
the bidet shall be protected according to Chapter 6, 
which allows for an airgap or vacuum breaker. 

418.0 DELETED 

419.0 Future Fixtures 

When provision is made for the future installation of 
fixtures, those provided for shall be considered in 
determining the required sizes of drain pipes. 
Construction for future installations shall be 
terminated with a plugged fitting or fittings. Where 
the plugged fitting is at the point where the trap of a 
fixture may be installed, the plumbing system for 
such fixture shall be complete and conform with all 
plumbing requirements of this Code. 

420.0 Shower and Tub/Shower Combination 
Control Valves 

Showers and tub-shower combinations in all buildings 
shall be provided with individual control valves of the 
pressure balance or the thermostatic mixing valve 
type. Gang showers, when supplied with a single 
temperature controlled water supply pipe, may be 
controlled by a master thermostatic mixing valve in 
lieu of individually controlled pressure balance or 
thermostatic mixing valves. Handle position stops 
shall be provided on such valves and shall be adjusted 
per the manufacturer's instructions to deliver a 
maximum mixed water setting of 120°F (49°C). The 
water heater thermostat shall not be considered a 
suitable control for meeting this provision. 



30 



PLUMBING FIXTURES AND FIXTURE FITTINGS 



Table 4-1 



TABLE 4-1 
Minimum Plumbing Facilities 1 

Each building shall be provided with sanitary facilities, including provisions for the physically handicapped as prescribed by the Department having jurisdiction. For 
requirements for the handicapped, ANSI A1 17.1-1992, Accessible and Usable Buildings and Facilities, may be used. 

The total occupant load shall be determined by minimum exiting requirements. The minimum number of fixtures shall be calculated at fifty (50) percent male and fifty 
(50) percent female based on the total occupant load. 



Type of Building 


Water Closets 14 


Urinals 5 - 10 


Lavatories Bathtubs or Showers Drinking Fountains 3 - 13 


or Occupancy 2 


(Fixtures per Person) 


(Fixtures per Person) 


(Fixtures per Person) (Fixtures per Person) (Fixtures per Person) 


Assembly Places - 


Male Female 


Male 


Male Female 






Theatres, Auditoriums, 


1:1-15 1:1-15 


0:1-9 


1 per 40 1 per 40 






Convention Halls, etc. - 


2:16-35 3:16-35 


1:10-50 








for permanent 


3: 36-55 4: 36-55 


Add one fixture for each 








employee use 


Over 55, add 1 fixture for 
each additional 40 persons. 


additional 50 males. 








Assembly Places - 


Male Female 


Male 


Male Female 






Theatres, Auditoriums, 


1:1-100 3:1-50 


1:1-100 


1:1-200 1:1-200 




1:1-150 


Convention Halls, etc. - 


2:101-200 4:51-100 


2: 101-200 


2:201-400 2:201-400 




2:151-400 


for public use 


3:201-400 8:101-200 


3: 201-400 


3:401-750 3:401-750 




3:401-750 




11:201-400 


4:401-600 


Over 750, add one fixture 




Over 750, add one fixture 




Over 400, add one fixture 


Over 600 add 1 fixture for 


for each additional 500 




for each additional 




for each additional 500 


each additional 300 males. 


persons. 




500 persons. 




males and 1 for each 












additional 1 25 females. 










Dormitories 9 


Male Female 


Male 


Male Female 


1 per 8 


1 per150 12 


School or Labor 


1 per 1 1 per 8 


1 per 25 


1 per 12 1 per 12 


For females, add 






Add 1 fixture for each 


Over 150, add 1 fixture for 


Over 12 add one fixture for 


1 bathtub per 30. 






additional 25 males (over 


each additional 50 males. 


each additional 20 males 


Over 150, add 1 






10) and 1 for each addrttona 


I 


and 1 for each 1 5 


per 20. 






20 females (over 8). 




additional females. 






Dormitories - 


Male Female 


Male 


Male Female 


1 per 8 




for staff use 


1:1-15 1:1-15 
2: 16-35 3: 16-35 
3: 36-55 4: 36-55 
Over 55, add 1 fixture for 
each additional 40 persons. 


1 per 50 


1 per 40 1 per 40 






Dwellings 4 












Single Dwelling 


1 per dwelling 




1 per dwelling 


1 per dwelling 




Multiple Dwelling or 


1 per dwelling or 




1 per dwelling or 


1 per dwelling or 




Apartment House 


apartment unit 




apartment unit 


apartment unit 




Hospital Waiting rooms 


1 per room 




1 per room 




1 per150 12 


Hospitals - 


Male Female 


Male 


Male Female 






for employee use 


1:1-15 1:1-15 
2:16-35 3:16-35 
3: 36-55 4: 36-55 
Over 55, add 1 fixture for 
each additional 40 persons. 


0: 1-9 

1:10-50 

Add one fixture for each 

additional 50 males. 


1 per 40 1 per 40 






Hospitals 












Individual Room 


1 per room 




1 per room 


1 per room 




Ward Room 


1 per 8 patients 




1 per 1 patients 


1 per 20 patients 


1 per 150 12 


Industrial 6 Warehouses 


Male Female 




Up to 100, 1 per 10 


1 shower for 


1 per150 12 


Workshops, Foundries 


1:1-10 1:1-10 




persons 


each 1 5 persons 




and similar 


2:11-25 2:11-25 






exposed to 




establishments - 


3: 26-50 3: 26-50 




Over 100, 1 per 15 


excessive heat or 




for employee use 


4:51-75 4:51-75 




persons 7 - 8 


to skin contam- 






5:76-100 5:76-100 






ination with poison- 




Over 100, add 1 fixture for 






ous, infectious, or 






each additional 30 persons 






irritating material 





Institutional - Other than Male Female 

Hospitals or Penal 1 per 25 1 per 20 

Institutions (on each 
occupied floor) 



Male 

0: 1-9 

1:10-50 

Add one fixture for each 

additional 50 males. 



Male 
1 per 10 



Female 
1 per 10 



1 per 8 



1 per150 12 



31 



Table 4-1 



UNIFORM PLUMBING CODE 



Type of Building 
or Occupancy 2 



Water Closets 14 Urinals 5 * 10 Lavatories Bathtubs or Showers Drinking Fountains 3 - 13 

(Fixtures per Person) (Fixtures per Person) (Fixtures per Person) (Fixtures per Person) (Fixtures per Person) 



Institutional - Other than 
Hospitals or Penal 
Institutions (on each 
occupied floor) - 
for employee use 



Male Female 

1:1-15 1:1-15 

2: 16-35 3: 16-35 
3: 36-55 4: 36-55 
Over 55, add 1 fixture for 
each additional 40 persons. 



Male 

0:1-9 

1:10-50 

Add one fixture for each 

additional 50 males. 



Male 
1 per 40 



Female 
1 per 40 



1 per 8 



1 per150 12 



Office or Public 
Buildings 



Male Female 

1:1-100 3:1-50 
2:101-200 4:51-100 
3:201-400 8:101-200 

11:201-400 
Over 400, add one fixture 
for each additional 500 
males and 1 for each 
additional 150 females. 



Male 

1:1-100 

2: 101-200 

3:201-400 

4:401-600 

Over 600 add 1 fixture for 

each additional 300 males. 



Male Female 

1:1-200 1:1-200 
2:201-400 2:201-400 
3:401-750 3:401-750 
Over 750, add one fixture 
for each additional 500 
persons 



1 per150 12 



Office or Public 

Buildings - 

for employee use 



Male Female 

1:1-15 1:1-15 

2:16-35 3:16-35 
3: 36-55 4: 36-55 
Over 55, add 1 fixture for 
each additional 40 persons. 



Male 

0: 1-9 

1:10-50 

Add one fixture for each 

additional 50 males. 



Male 
1 per 40 



Female 
1 per 40 



Penal Institutions - 
for employee use 



Male Female 

1:1-15 1:1-15 

2:16-35 3:16-35 
3: 36-55 4: 36-55 
Over 55, add 1 fixture for 
each additional 40 persons. 



Male 

0:1-9 

1:10-50 

Add one fixture for each 

additional 50 males. 



Male 
1 per 40 



Female 
1 per 40 



1 per150 12 



Penal Institutions - 
for prison use 

Cell 

Exercise Room 



1 per cell 

1 per exercise room 



Male 

1 per exercise room 



1 per cell 

1 per exercise room 



1 per cell block floor 
1 per exercise room 



Restaurants, Pubs and 
Lounges 1 1 



Male Female 

1:1-50 1:1-50 

2:51-150 2:51-150 

3:151-300 4:151-300 



Male 

1:1-150 

Over 1 50, add 1 fixture for 

each additional 150 males 



Over 300, add 1 fixture for 
each additional 200 persons 



Male Female 

1:1-150 1:1-150 
2:151-200 2:151-200 
3:201-400 3:201-400 
Over 400, add 1 fixture for 
each additional 400 persons 



Schools - for staff use 
All schools 



Male Female 

1:1-15 1:1-15 

2:16-35 2:16-35 
3: 36-55 3: 36-55 
Over 55, add 1 fixture for 
each additional 40 persons 



Male 
1 per 50 



Male 
1 per 40 



Female 
1 per 40 



Schools - for student use Male 



Female 



Nursery 



1:1-20 1:1-20 

2:21-50 2:21-50 
Over 50, add 1 fixture for 
each additional 50 persons 



Elementary 


Male 


Female 


Male 




1 per 30 


1 per 25 


1 per 75 


Secondary 


Male 


Female 


Male 




1 per 40 


1 per 30 


1 per 35 


Others (Colleges, 


Male 


Female 


Male 


Universities, Adult 


1 per 40 


1 per 30 


1 per 35 


Centers, etc.) 









Male 


Female 


1:1-25 


1:1-25 


2:26-50 


2: 26-50 


Over 50, add 1 fixture for 


each additional 50 persons 


Male 


Female 


1 per 35 


1 per 35 


Male 


Female 


1 per 40 


1 per 40 


Male 


Female 


1 per 40 


1 per 40 



1 per150 12 

1 per150 12 
1 per150 12 
1 per150 12 



Worship Places 
Educational and 
Activities Unit 



Male 
1 per 150 



Female 

1 per 75 



Male 
1 per 1 50 



1 per 2 water closets 



1 per150 12 



Worship Places Principal Male Female 

Assembly Place 1 per 1 50 1 per 75 



Male 
1 per 1 50 



1 per 2 water closets 



1 per150 12 



32 



PLUMBING FIXTURES AND FIXTURE FITTINGS Table 4-1 

1 . The figures shown are based upon one (1) fixture being the minimum required for the number of persons indicated or any fraction thereof. 

2. Building categories not shown on this table shall be considered separately by the Administrative Authority. 

3. Drinking fountains shall not be installed in toilet rooms. 

4. Laundry trays. One (1) laundry tray or one (1) automatic washer standpipe for each dwelling unit or one (1) laundry tray or one (1) automatic I 
washer standpipe, or combination thereof, for each twelve (12) apartments. Kitchen sinks, one (1) for each dwelling or apartment unit. | 

5. For each urinal added in excess of the minimum required, one water closet may be deducted. The number of water closets shall not be reduced to 
less than two-thirds (2/3) of the minimum requirement. 

6. As required by ANSI Z4. 1-1986, Sanitation in Places of Employment. 

7. Where there is exposure to skin contamination with poisonous, infectious, or irritating materials, provide one (1) lavatory for each five (5) persons. 

8. Twenty-four (24) lineal inches (610 mm) of wash sink or eighteen (18) inches (457 mm) of a circular basin, when provided with water outlets for 
such space, shall be considered equivalent to one (1) lavatory. 

9. Laundry trays, one (1) for each fifty (50) persons. Slop sinks, one (1) for each hundred (100) persons. 

10. General. In applying this schedule of facilities, consideration must be given to the accessibility of the fixtures. Conformity purely on a numerical 
basis may not result in an installation suited to the need of the individual establishment. For example, schools should be provided with toilet 
facilities on each floor having classrooms. 

a. Surrounding materials, wall and floor space to a point two (2) feet (610 mm) in front of urinal lip and four (4) feet (1219 mm) above the floor, 
and at least two (2) feet (610 mm) to each side of the urinal shall be lined with non-absorbent materials. 

b. Trough urinals are prohibited. 

1 1 . A restaurant is defined as a business which sells food to be consumed on the premises. 

a. The number of occupants for a drive-in restaurant shall be considered as equal to the number of parking stalls. 

b. Employee toilet facilities are not to be included in the above restaurant requirements. Hand washing facilities must be available in the kitchen 
for employees. 

12. Where food is consumed indoors, water stations may be substituted for drinking fountains. Offices, or public buildings for use by more than six (6) ■ 
persons shall have one (1) drinking fountain for the first one hundred fifty (150) persons and one (1) additional fountain for each three hundred (300) 
persons thereafter. 

13. There shall be a minimum of one (1) drinking fountain per occupied floor in schools, theatres, auditoriums, dormitories, offices or public building. 

14. The total number of water closets for females shall be at least equal to the total number of water closets and urinals required for males. 



33 



UNIFORM PLUMBING CODE 



^ 



O 



34 



CHAPTER 5 

WATER HEATERS 



501.0 General 

The regulations of this chapter shall govern the 
construction, location, and installation of all fuel 
burning and other water heaters heating potable 
water, together with all chimneys, vents, and their 
connectors. All design, construction, and 
workmanship shall be in conformity with accepted 
engineering practices and shall be of such character as 
to secure the results sought to be obtained by this 
Code. No water heater shall be hereinafter installed 
which does not comply in all respects with the type 
and model of each size thereof approved by the 
Administrative Authority. A list of generally accepted 
gas equipment standards is included in Table 14-1. 

502.0 Definitions 

502.1 Chimney - A vertical shaft enclosing one or 
more flues for conveying flue gases to the outside 
atmosphere. 

502.2 Chimney Connector - The pipe which 
connects a fuel-burning appliance to a chimney. 

502.3 Combustible Material - Walls, floors, 
ceilings, shelves, or other parts of a building 
constructed of wood, wood lath and plaster, 
composition or paper. 

502.4 Dielectric Insulator - A device used as a non- 
conductor. 

502.5 Direct Vent Appliance - Appliance 
constructed and installed so that all air for 
combustion is derived directly from the outside 
atmosphere and all flue gases are discharged directly 
to the outside atmosphere. 

502.6 Direct Vent Water Heater - A water heater 
which is constructed and installed so that all air for 
combustion is derived directly from the outside 
atmosphere and all flue gases are discharged directly 
to the outside atmosphere. 

502.7 Unusually Tight Construction - Construction 
where: 

(1) Walls and ceiling exposed to the outside 
atmosphere have a continuous water vapor 
retarder with a rating of one perm or less with 
any openings gasketed or sealed, and 

(2) Weatherstripping on openable windows 
and doors, and 

(3) Caulking or sealants are applied to areas 
such as joints around window and door frames, 
between sole plates and floors, between wall- 



ceiling joints, between wall panels and at 
penetrations for plumbing, electrical and gas 
lines and at other openings. 

502.8 Vent - Listed factory-made vent pipe and 
vent fittings for conveying products of combustion 
to the outside atmosphere. 

502.9 Vent Collar - The outlet opening of an 
appliance provided for connection of the vent 

system. 

502.1 Vent Connector - That portion of a venting 
system which connects an appliance to a vent. 

502.1 1 Venting System - The vent or chimney, its 
connectors assembled to form a continuous open 
passageway from an appliance to the outside 
atmosphere for the purpose of removing products of 
combustion. This definition shall also include the 
venting assembly which is an integral part of the 
appliance. 

502.1 2 Venting Systems - Types 

(1) Chimneys or vents of masonry, reinforced 
concrete or metal; and factory-built chimneys 
approved or listed for products of combustion at 
temperatures in excess of five hundred fifty 
degrees (550°F) (288°C). 

(2) Type B - Factory-made gas vents listed by a 
nationally recognized testing agency for venting 
listed or approved appliances equipped to burn 
only gas. 

(3) Type L - A venting system consisting of 
listed vent piping and fittings for use with oil- 
burning appliances listed for use with Type L or 
with listed gas appliances. 

502.13 Water Heater - An appliance designed 
primarily to supply hot water and is equipped with 
automatic controls limiting water temperature to a 
maximum of two hundred ten degrees (210°F) 
(99°C). 

503.0 Permits 

It shall be unlawful for any person to install, remove, 
or replace, or cause to be installed, removed, or 
replaced any water heater without first obtaining a 
permit from the Administrative Authority to do so. 

504.0 Inspection 

504.1 Inspection of Chimneys or Vents. This 
inspection shall be made after all chimneys, vents, or 



35 



504.1 - 507.3 



UNIFORM PLUMBING CODE 



parts thereof, authorized by the permit have been 
installed and before any such vent or part thereof has 
been covered or concealed. 

504.2 Final Water Heater Inspection. This 
inspection shall be made after all work authorized by 
the permit has been installed. The Administrative 
Authority will make such inspection as deemed 
necessary to be assured that the work has been 
installed in accordance with the intent of this Code. 
No equipment or part thereof shall be covered or 
concealed until the same has been inspected and 
approved by the Administrative Authority. 

505.0 Gas-Fired Water Heater Approval 
Requirements 

505.1 Gas fired water heaters and gas fired hot 
water boilers shall conform to approved recognized 
applicable standards or to other standards acceptable 
to the Administrative Authority. Each such water 
heater or boiler shall bear the label of an approved 
testing agency, certifying and attesting that such 
equipment has been tested and inspected and meets 
the requirements of applicable standards. 

505.2 Except when reconditioned by the 
manufacturer or the manufacturer's approved agent 
in accordance with its original approval 
requirements and reinstalled at its original location, 
each reconditioned water heater or hot water boiler 
shall be tested for safety and conformity to approved 
standards, and shall bear the label of an approved 
testing agency certifying and attesting that such 
equipment has been tested and inspected and meets 
the requirements of applicable standards. Such label 
shall also state clearly that the water heater has been 
reconditioned, and shall give the name and address 
of the reconditioner. Every person applying for a 
permit to install a used or reconditioned water 
heater shall clearly state on the application for 
permit that such equipment is used or reconditioned. 

505.3 Gas storage-type water heaters and hot water 
boilers shall be provided with, in addition to the 
primary temperature controls, an over-temperature 
safety protection device constructed, listed, and 
installed in accordance with nationally recognized 
applicable standards for such devices and a 
combination temperature and pressure relief valve. 

506.0 Oil-Burning and Other Water Heaters 

506.1 Water heaters deriving heat from fuels or 
types of energy other than gas shall be constructed 
and installed in accordance with approved standards 
in a manner satisfactory to the Administrative 
Authority. Vents or chimneys for such appliances 
shall be approved or listed types and shall be made 



for an adequate supply of air for combustion and for 
adequate ventilation of heater rooms or 
compartments. Each such appliance shall be installed 
in an approved location satisfactory to the 
Administrative Authority and to local and State fire 
prevention agencies. 

506.2 All storage-type water heaters and hot water 
boilers deriving heat from fuels or types of energy 
other than gas, shall be provided with, in addition to 
the primary temperature controls, an over- 
temperature safety protection device constructed, 
listed, and installed in accordance with nationally 
recognized applicable standards for such devices and 
a combination temperature and pressure relief valve. 

507.0 Combustion Air 

507.1 Fuel burning water heaters shall be assured a 
sufficient supply of air for proper fuel combustion 
and ventilation. 

507.2 In buildings of unusually tight construction, 
combustion air shall be obtained from outside. In 
buildings of ordinary tightness insofar as infiltration 
is concerned, all or a portion of the combustion air 
for fuel burning water heaters may be obtained from 
infiltration if the enclosure volume equals at least 
fifty (50) cubic feet per 1000 Btu/h input of the water 
heater. 

507.3 Methods of Supplying Air. The net free area 
of openings, ducts or plenums supplying 
combustion air to an area containing fuel burning 
water heaters shall be as specified in Table 5-1. When 
grilles, screens or louvers are inserted in combustion 
air openings, the provisions of Section 507.4 apply. 

507.3.1 Openings shall be located so that one 
combustion air opening extends within the 
upper twelve (12) inches (305 mm) of the 
appliance enclosure and one combustion air 
opening extends within the lower twelve (12) 
inches (305 mm) of the enclosure. Required 
combustion air ducts shall not be less than three 
(3) inches (76 mm) in the least dimension. 

507.3.2 Openings shall terminate in a space at 
least three (3) inches (76 mm) in depth open to 
the front or side of the appliance. Such space 
shall extend from the floor to the ceiling of the 
appliance enclosure. 

507.3.3 Openings shall have the same cross- 
sectional area as the free area of the openings to 
which they connect. 

507.3.4 Openings shall serve a single enclosure. 

507.3.5 Openings shall serve only upper or 
lower combustion air openings. The separation 
between ducts serving upper and lower 



36 



WATER HEATERS 



507.3-511.2 



combustion air openings shall be maintained to 
the source of combustion air. 

507.3.6 Dampers. Combustion air ducts shall 
not be installed so as to pass through 
construction where fire dampers are required. 
Volume dampers shall not be installed in 
combustion air ducts. 

507.3.7 Screens. Neither end of ducts which 
terminate in an attic shall be screened. 

507.4 Louvers and Grilles. In calculating free area 
of all louvers and grilles, consideration shall be given 
to the blocking effect of louvers, grilles or screens 
protecting openings. Screens used shall not be 
smaller than one-fourth (1/4) inch (6.4 mm) mesh. 
The free area through a design of louver or grille 
shall be used in calculating the size opening required 
to provide the free area specified. 

507.5 Alternate Methods of Supplying 
Combustion Air. In lieu of the requirements of Table 
5-1, combustion air supply may be designed in 
accordance with recognized engineering principles 
when first approved by the Adiriinistrative Authority. 

508.0 Clearances 

Clearances of listed appliances from combustible 
materials shall be as specified in the listing or on the 
rating plate. 

509.0 Prohibited Locations 

Water heaters which depend on the combustion of 
fuel for heat shall not be installed in a room used or 
designed to be used for sleeping purposes, 
bathroom, clothes closets or in a closet or other 
confined space opening into a bath or bedroom. 

Exception: Direct vent water heaters. 

Where not prohibited by other regulations, water 
heaters may be located under a stairway or landing. 

510.0 Protection From Damage 

510.1 Water heaters generating a glow, spark or 
flame capable of igniting flammable vapors may be 
installed in a garage, provided the pilots, burners or 
heating elements and switches are at least eighteen 
(18) inches (457 mm) above the floor level. 

510.2 Where such water heaters installed within a 
garage are enclosed in a separate, approved 
compartment having access only from outside of the 
garage, such water heaters may be installed at floor 
level provided the required combustion air is also 
taken from the exterior of the garage. Fuel burning 
water heaters having sealed combustion chambers 
need not be elevated. 



510.3 All water heaters installed in areas where they 
may be subjected to mechanical damage shall be 
suitably guarded against such damage by being 
installed behind adequate barriers or by being 
elevated or located out of the normal path of a 
vehicle using any such garage. 

510.4 The Administrative Authority may require 
the use of an approved dielectric insulator on the 
water piping connections of water heaters and 
related water heating equipment. 

510.5 In seismic zones 3 and 4, water heaters shall 
be anchored or strapped to resist horizontal 
displacement due to earthquake motion. Strapping 
shall be at points within the upper one-third (1/3) 
and lower one-third (1/3) of its vertical dimensions. 
At the lower point, a minimum distance of four (4) 
inches (102 mm) shall be maintained above the 
controls with the strapping. 

510.6 A water heater supported from the ground 
shall rest on level concrete or other approved base 
extending not less than three (3) inches (76 mm) 
above the adjoining ground level. 

510.7 When a water heater is located in an attic or 
furred space where damage may result from a 
leaking water heater, a watertight pan of corrosion 
resistant materials shall be installed beneath the 
water heater with a minimum three-quarter (3/4) 
inch (19.1 mm) diameter drain to an approved 
location. 

511.0 Access and Working Space 

Every water heater installation shall be accessible for 
inspection, repair, or replacement. The appliance 
space shall be provided with an opening or doorway 
of sufficient size to remove the water heater. In no 
case shall such opening or doorway be less than 
twenty-four (24) inches (610 mm) in width. Such 
access shall be continuous and shall be one or any 
combination of the following means: 

511.1 By an opening or door, and passageway not 
less than two (2) feet (610 mm) in width and large 
enough to permit removal of the water heater, but 
not less than thirty (30) inches (762 mm) in height. 
Stairways and ramps leading to or part of such 
passageways shall comply with the Building Code. 

51 1 .2 Every attic, roof, mezzanine, or platform more 
than eight (8) feet (2438 mm) above the ground or 
floor level shall be made accessible by a stairway or 
ladder permanently fastened to the building. Such a 
ladder or stairway shall not be more than eighteen 
(18) feet (5486 mm) in length between landings and 
not less than fourteen (14) inches (355 mm) in width. 
Such a ladder shall have rungs spaced not more than 
fourteen (14) inches (355 mm) center to center and 



37 



511.2-514.1 



UNIFORM PLUMBING CODE 



not less than six (6) inches (152.4 mm) from the face 
of the wall. Each stile is to extend thirty (30) inches 
(762 mm) above the surface to be reached, or as high 
as possible, if height is limited. Permanent ladders 
for water heater access need not be provided at 
parapets or walls less than thirty (30) inches (762 
mm) in height. 

Exception: A portable ladder may be used for 
access for water heaters in attics on the single- 
story portion of a Group U, Division 1 or R 
Occupancy. 

51 1.3 By a trap door or opening and passageway not 
less than thirty (30) inches (762 mm) by thirty (30) 
inches (762 mm), but in no case smaller than the 
water heater. The passageway shall be continuous 
from the trap door or opening to the water heater. 
The trap door or opening shall be located not more 
than twenty (20) feet (508 mm) from the water heater. 

511.4 Every passageway to an attic water heater 
| shall have an unobstructed solid continuous flooring 

not less than twenty-four (24) inches (610 mm) wide 
from the trap door or opening to the water heater. If 
the trap door or opening is more than eight (8) feet 
(2438 mm) above the floor, a stairway or ladder 
permanently fastened to the building shall be 
provided. Such stairway or ladder shall lead directly 
to the edge of the trap door or opening and shall 
comply with the provisions of this section. 

Exception: A portable ladder may be used for 
access for water heaters in attics on the single- 
story portion of a Group U, Division 1 or R 
Occupancy. 

511.5 By an unobstructed a catwalk not less than 
twenty-four (24) inches (610 mm) wide. Access to the 
catwalk shall be by ladder or stairs complying with 
the provisions of this section. 

Attic and underfloor water heater locations shall 
be provided with an electric outlet and lighting 
fixture at or near the water heater. The lighting 
fixture shall be controlled by a switch located 
adjacent to the opening or trap door. 

An unobstructed solidly floored working space 
not less than thirty (30) inches (762 mm) in depth 
and width shall be provided immediately in front of 
the firebox access opening. A door opening into such 
space shall not be considered as an obstruction. 

512.0 Venting of Water Heaters - General 

512.1 Every water heater designed to be vented 
shall be connected to a venting system and such 
system shall comply with the provisions of this 
chapter, except as provided in this section. 

512.2 Venting systems shall consist of approved 



chimneys, Type B vents, Type L vents, or a venting 
assembly which is an integral part of or specified by 
the manufacturer to be used with a listed appliance. 

512.3 Venting systems shall be so designed and 
constructed as to develop a positive flow adequate to 
convey all products of combustion to the outside 
atmosphere. 

512.4 Venting systems may be designed in 
accordance with the accepted engineering methods 
when such design method has been approved by the 
Administrative Authority. 

51 2-5 A venting system which is an integral part of 
the vented appliance shall be installed in accordance 
with the terms of its listing, manufacturer's 
installation requirements, and applicable 
requirements of this Code. 

512.6 Every factory-built chimney, Type B gas vent, 
or Type L vent shall be installed in accordance with 
the manufacturer's instructions, the terms of its listing 
and to the applicable requirements of this Code. 

512.7 Every metal chimney shall be installed 
according to the applicable requirements of this 
chapter. 

512.8 Any unused opening in any venting system 
shall be closed or capped to the satisfaction of the 
Administrative Authority. 

513.0 Limitations 

513.1 Type B vents shall not be used for venting the 
following: 

(1) Water heaters which may be converted 
readily to the use of solid or liquid fuels. 

(2) Water heaters listed for use with chimneys 
only. 

513.2 Dampers. Manually operated dampers shall 
not be placed in chimneys, vents, chimney or vent 
connectors of fuel burning water heaters. 

Exception: Automatically operated vent 
dampers shall be listed and installed in 
accordance with the manufacturer's installation 
instructions. 

Fixed baffles on the water heater side of draft hoods 
and draft regulators shall not be classified as dampers. 

514.0 Vent Connectors 

514.1 Connectors used for gas water heaters having 
draft hoods may be constructed of noncombustible 
materials having resistance to corrosion not less than 
that of galvanized sheet steel and be of a thickness 
not less than that specified in Section 523.2 or they 
may be of Type B or Type L vent material. 



38 



WATER HEATERS 



Table 5-1 -516.1 



TABLE 5-1 

Size of Combustion Air Openings or Ducts 1 for Gas- or Liquid-Burning Water Heaters 




Column 1 
Buildings of Ordinary Tightness 



Column 2 
Buildings of Unusually Tight Construction 



Condition 



Size of Opening or Duct 



Condition 



Size of Opening or Duct 



Appliance in unconfined 2 
space 



May rely on infiltration alone. 



Appliance in unconfined 2 

space: 

Obtain combustion air from 

outdoors or from space freely 

communicating with outdoors. 



Provide 2 openings, each having 
1 sq. in. (645 mm 2 ) per 5,000 
Btu/h input. 



Appliance in confined 4 space 
1 . All air from inside building 



Provide two openings into 
enclosure each having 1sq. 
in. (645 mm 2 ) per 1 ,000 Btu/h 
input freely communicating 
with other unconfined interior 
spaces. 

Minimum 100 sq. in. (0.06 
m 2 ) each opening. 



Appliance in confined 4 space: 
Obtain combustion air from 
outdoors or from space freely 
communicating with outdoors. 



2. Part of air from inside 
building 



Provide 2 openings into 
enclosure 3 from other freely 
communicating unconfined 2 
interior spaces, each having 
an area of 100 sq. in. (0.06 
m 2 ) plus one duct or plenum 
opening to outdoors having 
an area of 1 sq. in. (645 
mm 2 ) per 5,000 Btu/h input 
rating. 



3. All air from outdoors: 
Obtain from outdoors or 
from space freely 
communicating with 
outdoors. 



Use any of the methods listed 
for confined space in 
unusually tight construction 
as indicated in Column 2. 



1 . Provide two vertical ducts or 
plenums: 

1 sq. in. (645 mm 2 ) per 4,000 
Btu/h input each duct or 
plenum. 

2. Provide two horizontal ducts or 
plenums: 1 sq. in. (645 mm 2 ) 
per 2,000 Btu/h input each duct 
or plenum. 

3. Provide two openings in an 
exterior wall of the enclosure: 
each opening 1 sq. in. (645 
mm 2 ) per 4,000 Btu/h input. 

4. Provide 1 ceiling opening to 
ventilated attic and 1 vertical 
duct to attic: each opening 1 
sq. in. (645 mm 2 ) per 4,000 
Btu/h input. 

5. Provide 1 opening in enclosure 
ceiling to ventilated attic and 1 
opening in enclosure floor to 
ventilated crawl space: each 
opening 1 sq. in. (645 mm 2 ) per 
4,000 Btu/h input 



1 For location of opening, see Section 507.3. 

2 As defined in Section 223.0. 

3 When the total input rating of appliances in enclosure exceeds 100,000 Btu/h, the area of each opening 
into the enclosure shall be increased 1 sq. in. (645 mm 2 ) for each 1 ,000 Btu/h over 100,000 Bth/h. 

4 As defined in Section 205.0. 



514.2 Single wall metal vent connectors shall be 
securely supported and joints fastened with sheet 
metal screws, rivets, or other approved means. 

514.3 Single wall metal pipe used as a connector 
shall not originate in an unoccupied attic or 
concealed space and shall not pass through any attic, 
inside wall, floor, or concealed space and shall be 
located in the same room or space as the fuel burning 
water heater. 

515.0 Location and Support of Venting Systems 

Combustion products vents, vent connectors, 
exhaust ducts from ventilating hoods as described in 
Section 525.0, chimneys, or chimney connectors shall 
not extend into or through any air duct or plenum. 

Exception: A venting system may pass through 
a combustion air duct. 



The base of every vent supported from the 
ground shall rest on a solid masonry or concrete base 
extending not less than two (2) inches (51 mm) above 
the adjoining ground level. The base of every vent 
which is not supported from the ground and is not 
self-supporting, shall rest on a firm metal or masonry 
support. 

No water heater shall be vented into a fireplace 
or into a chimney serving a fireplace. 

All venting systems shall be adequately 
supported for the weight and the design of the 
material used. 

516.0 Length, Pitch, and Clearance 

516.1 Vent Offsets. Except as provided for in 
Section 512.4, gravity vents shall extend in a 
generally vertical direction with offsets not 



39 



516.1 -517.6 



UNIFORM PLUMBING CODE 



exceeding forty-five (45) degrees (0.79 rad). A gravity 
vent may also have one (1) horizontal offset of not 
more than sixty (60) degrees (1.05 rad). 

516.2 Every offset shall be supported for its weight 
and shall be installed to maintain proper clearance, 
to prevent physical damage and to prevent 
separation of the joints. 

516.3 Any angle greater than forty-five (45) degrees 
(0.79 rad) from the vertical is considered horizontal. 
The total horizontal run of a vent, as described in 
Section 516.1 above, plus the horizontal vent 
connector, shall be not greater than seventy-five (75) 
percent of the vertical height of the vent. 

516.4 Rise. Every vent connector which is a part of 
a gravity-type venting system shall have a 
continuous rise of not less than one-fourth (1/4) inch 
per foot (20.9 mm/m) of length measured from the 
appliance vent collar to the vent. 

516.5 Clearance. Single wall metal vent connectors, 
where permitted to be used by Section 514.0, shall be 
provided with clearances from combustible material 
of not less than six (6) inches (152 mm). 

517.0 Vent Termination 

517.1 General. Vents shall extend above the roof 
surface, through a flashing, and terminate in an 
approved or listed vent cap which shall be installed 
according to its listing and manufacturer's instructions. 

Exception: A direct vent or mechanical draft 
appliance shall be acceptable when installed 
according to its listing and manufacturer's 
instructions. 

517.2 Gravity-Type. No gravity-type venting 
system, other than a venting system which is an 
integral part of a listed water heater shall terminate 



less than five (5) feet (1524 mm) above the highest 
vent collar which it serves. 

517.3 Type B. Type B gas vents with listed vent 
caps twelve (12) inches (305 mm) in size or smaller 
shall be permitted to be terminated in accordance 
with Table 5-2, provided they are located at least 
eight (8) feet (2438 mm) from a vertical wall or 
similar obstruction. All other Type B gas vents shall 
terminate not less than two (2) feet (610 mm) above 
the highest point where they pass through the roof 
and at least two (2) feet (610 mm) higher than any 
portion of a building within ten (10) feet (3048 mm). 

517.4 Type L. No Type L venting system shall 
terminate less than two (2) feet (610 mm) above the 
roof through which it passes, nor less than four (4) 
feet (1219 mm) from any portion of the building 
which extends at an angle of more than forty-five 
(45) degrees (0.79 rad) upward from the horizontal. 

517.5 Venting Termination. No vent system shall 
terminate less than four (4) feet (1219 mm) below or 
four (4) feet (1219 mm) horizontally from, nor less 
than one (1) foot (305 mm) above any door, openable 
window, or gravity air inlet into any building. 

Exception: Vent terminals of direct vent 
appliances with inputs of 50,000 Btu/h (14,650 
watts) or less shall be located not less than nine 
(9) inches (229 mm) from any opening through 
which combustion products could enter a 
building. Such appliances with inputs over 
50,000 Btu/h (14,650 watts) shall require twelve 
(12) inch (305 mm) vent termination clearances. 
The bottom of the vent terminal and the air 
intake shall be located at least twelve (12) inches 
(305 mm) above grade. 

517.6 No venting system shall terminate less than 
three (3) feet (914 mm) above any forced air inlet 



TABLE 5-2 

Minimum Height from Roof 
to Lowest Discharge Opening 



Roof Slope 


>, Inches 


Feet- 


- Inches 


Meters 


Roof Slope, mm 




Flat to 6/12 


1 - 


-0 


0.3 


Flat to 152/305 


Over 


6/1 2 to 7/12 


1 - 


-3 


0.4 


152/305 to 178/305 


Over 


7/12 to 8/12 


1 - 


-6 


0.5 


178/305 to 203/305 


Over 


8/1 2 to 9/12 


2- 


-0 


0.6 


203/305 to 229/305 


Over 


9/12 to 10/12 


2- 


-6 


0.8 


229/305 to 254/305 


Over 


10/12 to 11/12 


3- 


-3 


1.0 


254/305 to 279/305 


Over 


11/12 to 12/12 


4- 


-0 


1.2 


279/305 to 305/305 


Over 


12/12 to 14/12 


5- 


-0 


1.5 


305/305 to 356/305 


Over 


14/12 to 16/12 


6- 


-0 


1.8 


356/305 to 406/305 


Over 


16/12 to 18/12 


7- 


-0 


2.1 


406/305 to 457/305 


Over 


18/1 2 to 20/1 2 


7- 


-6 


2.3 


457/305 to 508/305 


Over 


20/12 to 21/12 


8- 


-0 


2.4 


508/305 to 533/305 



40 



WATER HEATERS 



517.6-522.1 



located within ten (10) feet (3048 mm) or less than 
four (4) feet (1219 mm) from any property line except 
a public way. 

518.0 Area of Venting System 

Every venting system shall have an internal cross- 
sectional area of not less than the area of the vent 
collar on the water heater unless the venting system 
has been designed in accordance with Section 512.4. 
In no case shall such area be less than seven (7) 
square inches (4516.1 mm 2 ), unless the venting 
system is an integral part of a listed water heater. 

519.0 Multiple Appliance Venting 

Two (2) or more oil or listed gas-burning appliances 
may be connected to one common gravity-type 
venting system provided the appliances are 
equipped with an approved primary safety control 
capable of shutting off the burners and the venting 
system is designed to conform with Section 512.4 or 
complies with the following requirements: 

519.1 Appliances which are connected to a common 
venting system shall be located within the same 
story of the building, excepting engineered venting 
systems as provided in Section 512.4. 

51 9.2 Two (2) or more connectors shall not enter a 
common venting system unless the inlets are offset 
in such a manner that no portion of any inlet is 
opposite the other inlets. 

519.3 Where two (2) or more appliances are 
connected to one venting system, the venting system 
area shall be not less than the area of the largest vent 
connector plus fifty (50) percent of the areas of the 
additional vent connectors. An oval vent may be 
used, provided its area is not less than the area of the 
round pipe for which it is substituted. 

51 9.4 Each vent connector of a multiple venting 
system shall have the greatest possible rise consistent 
with the headroom available between the draft hood 
outlet, the barometric damper or the flue collar and 
the point of interconnection to a manifold, to a 
common vent, or to a chimney. 

520.0 Existing Venting System 

An existing venting system shall not be connected to 
a replaced water heater unless the venting system 
complies with all the following requirements: 

520.1 The venting system shall have been lawfully 
installed in compliance with the Code in effect at the 
time of its installation and shall be in a safe condition. 

520.2 The internal area of the venting system shall 
comply with Section 518.0. 



520.3 The venting system shall be connected to the 
water heater in a safe manner. 



521.0 Draft Hoods 

Every water heater draft hood shall be located in the 
same room or space as the combustion air opening of 
the water heater. 

Every draft hood shall be installed in the position 
for which it was designed and shall be located so that 
the draft hood relief opening is not less than six (6) 
inches (152 mm) from any surface other than the 
water heater it serves, measured in a direction ninety 
(90) degrees (1.58 rad) to the plane of the relief 
opening. When a greater clearance is indicated by the 
water heater approval, as shown on the water heater 
label, this greater clearance shall be provided. 

522.0 Gas Venting Into Existing Masonry 
Chimneys 

522.1 Existing lined masonry chimneys and unlined 
chimneys with not more than one (1) side exposed to 
the outside may be used to vent a gas water heater 
provided: 

522.1.1 Approved liner shall be installed in an 
existing unlined masonry chimney when 
deemed necessary by the Administrative 
Authority considering local problems of vent gas 
condensation. 

522.1.2 The effective cross-sectional area is not 
more than four (4) times the cross-sectional area 
of the vent and chimney connectors entering the 
chimney. 

522.1.3 The effective area of the chimney when 
connected to more than one (1) appliance shall 
not be less than the area of the largest vent or 
chimney connector plus fifty (50) percent of the 
area of the additional vent or chimney connectors. 

522.1.4 Automatically controlled gas water 
heaters connected to a chimney which also 
serves equipment burning liquid fuel shall be 
equipped with an automatic pilot. A gas water 
heater chimney connector and a chimney 
connector from an appliance burning liquid fuel 
may be connected into the same chimney 
through separate openings providing the gas 
water heater is vented above the other fuel- 
burning appliance or both may be connected 
through a single opening if joined by a suitable 
fitting located at the chimney. If two (2) or more 
openings are provided into one (1) chimney, 
they shall be at different levels so that no portion 
of one (1) inlet is in the same horizontal plane of 
another inlet. 



41 



522.1 - 524.5 



UNIFORM PLUMBING CODE 



522.1.5 The chimney passage way shall be 
examined to ascertain that it is clear and free of 
obstruction and shall be cleaned if previously 
used for venting solid or liquid fuel-burning 
appliances. 

522.1.6 The vent or chimney connector shall 
enter the chimney not less than six (6) inches (152 
mm) from the bottom of the chimney. The 
chimney shall be provided with a cleanout If six 
(6) inches (152 mm) are not available, a cleanout 
shall be provided by installing a capped tee in 
the vent connector next to the chimney. 

522.2 Unlined chimneys with more than one (1) side 
exposed to the outside shall be lined with an 
approved liner unless otherwise approved by the 
Administrative Authority. 

522.3 When inspection reveals that an existing 
chimney is not safe for the intended application, it 
shall be rebuilt in a manner acceptable to the 
Administrative Authority or replaced with an 
approved gas vent or factory built chimney. 

523.0 Chimney Connectors 

523.1 Materials. Chimney connectors shall be 
constructed of single wall metal conforming with 
Section 523.2 or of other materials approved for the 
use intended. 

523.2 Single Wall Steel. Chimney connectors made 
of single wall steel pipe and serving low-heat 
appliances shall be of not less than the following 
gauges. 

Diameter of Connector Galvanized Sheet 



Inches 


mm 


Gauge No. 


5 or less 


127.0 or less 


28 


Over 5 to 9 


Over 127.0 to 229 


26 


Over 9 to 12 


Over 229 to 305 


22 


Over 12 to 16 


Over 305 to 406 


20 


Over 16 


Over 406 


16 



523.3 Installation 

523.3.1 Two (2) or more chimney connectors 
shall not be joined unless the common 
connector, the manifold, and the chimney are 
sized properly to serve the appliances connected 
thereto and adequate draft is available to 
remove all products of combustion to the 
outdoors. 

Connectors serving gravity vent-type water 
heaters shall not be connected to a venting 
system served by a power exhauster unless the 
connection is made on the negative pressure side 
of the power exhauster. 

523.3.2 Single wall metal chimney connectors 



shall be installed with clearance to combustibles 
of not less than six (6) inches (152 mm). 

523.3.3 All connectors shall be as short and 
straight as possible. A water heater shall be 
located as close as practicable to the venting 
system. The connector shall be not longer than 
seventy-five (75) percent of the portion of the 
venting system above the inlet connection unless 
a part of an approved engineered venting 
system. 

523.3.4 A connector to a masonry chimney shall 
extend through the wall to the inner face of liner 
but not beyond and shall be firmly cemented to 
masonry. A thimble may be used to facilitate 
removal of the connector for cleaning, in which 
case the thimble shall be permanently cemented 
in place. Connectors shall not pass through any 
floor or ceiling. 

523.3.5 A draft regulator shall be installed in 
the connector serving a liquid fuel-burning 
water heater unless the water heater is approved 
for use without a draft regulator. A draft 
regulator, when used, shall be installed in the 
same room or enclosure as the water heater in 
such a manner that no difference in pressure 
between air in the vicinity of the regulator and 
the combustion air supply will be permitted. 

524.0 Mechanical Draft Systems 

524.1 Forced or Induced Draft Systems. Water 
heaters may be vented by means of a mechanical 
draft system of either forced or induced draft design. 

524.2 Positive Pressure Systems. Forced draft 
systems and all portions of induced draft systems 
under pressure during operation shall be designed 
and installed so as to be gastight or as to prevent 
leakage of combustion products into a building. 

524.3 Interconnected Systems. Vent connectors 
serving gas appliances vented by natural draft shall 
not be connected into any portion of a mechanical 
draft system operating under positive pressure. 

524.4 Interlock Controls. When a mechanical draft 
system is employed, provisions shall be made to 
prevent the flow of gas to the main burners when the 
draft system is not performing so as to satisfy the 
operating requirements of the water heater for safe 
performance. 

524.5 Exit Terminals. The exit terminals of 
mechanical draft systems shall be located not less 
than twelve (12) inches (305 mm) from any opening 
through which combustion products could enter the 
building, nor less than two (2) feet (610 mm) from an 
adjacent building, and not less than seven (7) feet 



42 



WATER HEATERS 524.5 - 525.3 

(2134 mm) above grade when located adjacent to 
public walkways. 

525.0 Venting Through Ventilating Hoods and 
Exhaust Systems 

525.1 Commercial Applications. Ventilating hoods 
and exhaust systems may be used to vent gas- 
burning water heaters installed in commercial 
applications. 

525.2 Dampers Prohibited. When automatically 
operated water heaters are vented through natural 
draft ventilating hoods, dampers shall not be 
installed in the ventilating system. 

525.3 Interlock Controls. When the ventilating 
hood or exhaust system is equipped with power 
means of exhaust the water heater control system 
shall be interlocked so as to permit water neater 
operation only when the power means of exhaust is 
in operation. 



43 



UNIFORM PLUMBING CODE 



^ 



44 



CHAPTER 6 

WATER SUPPLY AND DISTRIBUTION 



601.0 Running Water Required 

601 .1 Except where not deemed necessary for safety 
or sanitation by the Administrative Authority, each 
plumbing fixture shall be provided with an adequate 
supply of potable running water piped thereto in an 
approved manner, so arranged as to flush and keep 
it in a clean and sanitary condition without danger of 
backflow or cross-connection. Water closets and 
urinals shall be flushed by means of an approved 
flush tank or flushometer valve. In jurisdictions 
which adopt Appendix J, water closets, urinals, and 
trap primers in designated non-residential buildings 
may be provided with reclaimed water as defined 
and regulated by Appendix J of this Code. 

601.2 Identification of a Potable and Nonpotable 
Water System. In all buildings where potable water 
and nonpotable water systems are installed, each 
system shall be clearly identified. Each system shall 
be color coded as follows: 

601.2.1 Potable Water - Green background 
with white lettering. 

601 .2.2 Nonpotable Water - Yellow back-ground 
with black lettering, with the words "CAUTION: 
NONPOTABLE WATER, DO NOT DRINK". 

Each system shall be identified with a colored 
band to designate the liquid being conveyed, and the 
direction of normal flow shall be clearly shown. The 
minimum size of the letters and length of the color 
field shall conform to Table 6-1. 

A colored identification band shall be indicated 
every twenty (20) feet (6096 mm) but at least once 
per room. 

Where vacuum breakers or backflow preventers 
are installed with fixtures listed in Table 14-1, 
identification of the discharge side may be omitted. 
Each outlet on the nonpotable water line which could 
be used for special purposes shall be posted as follows: 

"CAUTION: NONPOTABLE WATER, DO NOT 
DRINK". 

TABLE 6-1 

Minimum Length of Color Field and Size of Letters 

Outside Diameter Minimum Length Minimum Size 

of Pipe or Covering, of Color Field, of Letters, 

inches (mm) inches (mm) inches (mm) 

1/2 to 1-1/4 (12.7 to 32) 8 (203) 1/2 (12.7) 

1-1/2 to 2 (38 to 51) 8 (203) 3/4 (19.1) 

2-1 12 to 6 (64 to 1 52) 12 (305) 1-1/4 (32) 

8 to 10 (203 to 254.0) 24 (619.0) 2-1/2 (64) 

Over 10 (Over 254.0) 32(813.0) 3-1/2(89) 



601.2.3 Reclaimed Water - Purple in color 
(Pantone color #512) and shall be imprinted in 
nominal 1/2" (12.7 mm) high, black, upper case 
letters, with the words "CAUTION: RECLAIMED 
WATER, DO NOT DRINK". 

601.3 Faucets and diverters shall be connected to 
the water distribution system so that hot water 
corresponds to the left side of the fittings. 

602.0 Unlawful Connections 

602.1 No installation of potable water supply 
piping or part thereof shall be made in such a 
manner that it will be possible for used, unclean, 
polluted or contaminated water, mixtures, or 
substances to enter any portion of such piping from 
any tank, receptacle, equipment, or plumbing fixture 
by reason of back-siphonage, by suction or any other 
cause, either during normal use and operation 
thereof or when any such tank, receptacle, 
equipment, or plumbing fixture is flooded, or subject 
to pressure in excess of the operating pressure in the 
hot or cold water piping. 

602.2 No person shall make a connection or allow 
one to exist between pipes or conduits carrying 
domestic water supplied by any public or private 
water service system, and any pipes, conduits, or 
fixtures containing or carrying water from any other 
source or containing or carrying water which has 
been used for any purpose whatsoever, or any 
piping carrying chemicals, liquids, gases, or any 
substances whatsoever, unless there is provided a 
backflow prevention device approved for the 
potential hazard. 

602.3 No plumbing fixture, device, or construction 
shall be installed or maintained or shall be connected 
to any domestic water supply when such installation 
or connection may provide a possibility of polluting 
such water supply or may provide a cross- 
connection between a distributing system of water 
for drinking and domestic purposes and water 
which may become contaminated by such plumbing 
fixture, device, or construction unless there is 
provided a backflow prevention device approved for 
the potential hazard. 

602.4 No water piping supplied by any private 
water supply system shall be connected to any other 
source of supply without the approval of the 
Administrative Authority, Health Department, or 
other Department Having Jurisdiction. 



45 



603.0 - 603.2 



UNIFORM PLUMBING CODE 



603.0 Cross-Connection Control 

Cross-connection control shall be provided in ac- 
cordance with the provisions of this chapter. 

No person shall install any water operated equip- 
ment or mechanism, or use any water treating 
chemical or substance, if it is found that such 
equipment mechanism, chemical or substance may 
cause pollution or contamination of the domestic 
water supply. Such equipment or mechanism may be 
permitted only when equipped with an approved 
backflow prevention device or assembly. 

603.1 Approval of Devices or Assemblies. Before 
any device or assembly is installed for the prevention 
of backflow, it shall have first been approved by the 
Administrative Authority. Devices or assemblies 
shall be tested for conformity with recognized stan- 
dards or other standards acceptable to the 



Administrative Authority which are consistent with 
the intent of this Code. 

All devices or assemblies installed in a potable 
water supply system for protection against backflow 
shall be maintained in good working condition by 
the person or persons having control of such devices 
or assemblies. The Administrative Authority or other 
department having jurisdiction may inspect such de- 
vices or assemblies and, if found to be defective or 
inoperative, shall require the repair or replacement 
thereof. No device or assembly shall be removed 
from use or relocated or other device or assembly 
substituted, without the approval of the 
Administrative Authority. 

603.2 Backflow Prevention Devices, Assemblies, 
and Methods 

603.2.1 Airgap. The minimum airgap to afford 



TABLE 6-2 

Backflow Prevention Devices, Assemblies and Methods 




Degree of Hazard 




Device, 
Assembly or 
Method 1 


Pollution 
(Low Hazard) 


Contamination 
(High Hazard) 


Installation 2, 3 


Back- 

Siphon- 
age 


Back- 
Pressure 


Back- 

Siphon- 
age 


Back- 
Pressure 


Airgap 


X 




X 




See table in this chapter. 


Atmospheric 

Vacuum 

Breaker 


X 




X 




Upright position. No valves 
downstream. Minimum of six (6) 
inches (152 mm) or listed distance 
above all downstream piping and 
flood level rim of receptor. 4 • * 


Spill-Proof 
Pressure-Type 
Vacuum 
Breaker 


X 




X 




Upright position. Minimum of six (6) 
inches (152 mm) or listed distance 
above all downstream piping and 
flood level rim of receptor. 5 


Double Check 
Valve 
Backflow 
Preventer 


X 


X 






Horizontal, unless otherwise listed. 
Requires one (1) foot (305 mm) 
minimum clearance at bottom for 
maintenance. May need 
platform/ladder for test and repair. 
Does not discharge water. 


Pressure 

Vacuum 

Breaker 


X 




X 




Upright position. May have valves 
downstream. Minimum of twelve (12) 
inches (305 mm) above all 
downstream piping and flood level rim 
of receptor. May discharge water. 


Reduced 
Pressure 
Principle 
Backflow 
Preventer 


X 


X 


X 


X 


Horizontal unless otherwise listed. 
Requires one (1 ) foot (305 mm) 
minimum clearance at bottom for 
maintenance. May need 
platform/ladder for test and repair. 
May discharge water. 


1 See descript 

2 Installation ir 
Authority. 

3 Refer to gen 

4 Not to be su 
hour period. 

5 Fordeck-mc 


on of d€ 
i pit or v. 

eral and 
bjected t 

unted ar 


jvices an 
ault requi 

specific r 
3 operatii 

id equipn 


d assem 
res previ 

equirem* 
ig pressi 

lent-moi 


blies in tt 
ous appr 

snts for ir 
j re for m 

nted vac 


lis chapter. 

oval by the Administrative 

istallation 

are than 12 hours in any 24 

uum breakers, see Section 603.4.16. 



46 



WATER SUPPLY AND DISTRIBUTION 



603.2 



backflow protection shall be in accordance with 
Table 6-3. 

603.2.2 Atmospheric Vacuum Breaker (AVB). 

An atmospheric vacuum breaker consists of a 
body, a checking member and an atmospheric 
opening. 

603.2.3 Double Check Valve Backflow 
Prevention Assembly (DC). A double check 
valve backflow prevention assembly consists of 
two independently acting internally loaded 
check valves, four properly located test cocks 
and two isolation valves. 

603.2.4 Pressure Vacuum Breaker Backflow 
Prevention Assembly (PVB). A pressure 
vacuum breaker backflow prevention assembly 
consists of a loaded air inlet valve, an internally 
loaded check valve, two (2) properly located test 
cocks and two (2) isolation valves. This device 



shall be installed outdoors only unless provisions 
for spillage are provided. 

603.2.5 Pressure Vacuum Breaker Spill-Proof 
Type Backflow Prevention Assembly (SVB). A 

pressure type vacuum breaker backflow 
prevention assembly consisting of one (1) check 
valve force-loaded closed and an air inlet vent 
valve force-loaded open to atmosphere, 
positioned downstream of the check valve, and 
located between and including two (2) tightly 
closing shut-off valves and test cock(s). 

603.2.6 Reduced Pressure Principle Backflow 
Prevention Assembly (RP). A reduced pressure 
principle backflow prevention assembly consists 
of two independently acting internally loaded 
check valves, a differential pressure relief valve, 
four properly located test cocks and two isolation 
valves. 



TABLE 6-3 

Minimum Airgaps for Water Distribution 4 


Fixtures 


When not affected 
by side walls 1 
Inches (mm) 


When affected by 
side walls 2 
Inches (mm) 


Effective openings 3 not greater 
than one-half (1/2) inch (12.7 mm) 
in diameter 


1 (25.4) 


1-1/2 (38) 


Effective openings 3 not greater 
than three-quarters (3/4) inch (19.1 
mm) in diameter 


1-1/2 (38) 


2-1/4 (57) 


Effective openings 3 not greater 
than one (1) inch (25.4 mm) in 
diameter 


2 (51) 


3 (76) 


Effective openings 3 greater than 
one (1) inch (25.4 mm) in diameter 


Two (2) times 

diameter of 

effective opening 


Three (3) times 

diameter of 
effective opening 


1 Side walls, ribs or similar obstructions do not affect airgaps when spaced from the 
inside edge of the spout opening a distance greater than three times the diameter of the 
effective opening for a single wall, or a distance greater than four times the effective 
opening for two intersecting walls. 

2 Vertical walls, ribs or similar obstructions extending from the water surface to or 
above the horizontal plane of the spout opening other than specified in Note 1 above. 
The effect of three or more such vertical walls or ribs has not been determined. In such 
cases, the airgap shall be measured from the top of the wall. 

3 The effective opening shall be the minimum cross-sectional area at the seat of the 
control valve or the supply pipe or tubing which feeds the device or outlet. If two or 
more lines supply one outlet, the effective opening shall be the sum of the 
cross-sectional areas of the individual supply lines or the area of the single outlet, 
whichever is smaller. 

4 Airgaps less than one (1) inch (25.4 mm) shall only be approved as a permanent part 
of a listed assembly that has been tested under actual backflow conditions with 
vacuums of to 25 inches (635 mm) of mercury. 



47 



603.3 - 603.4 



UNIFORM PLUMBING CODE 



603.3 General Requirements 

603.3.1 All assemblies shall conform to listed 
standards and be acceptable to the 
Administrative Authority having jurisdiction 
over the selection and installation of backflow 
prevention assemblies. 

603.3.2 The premise owner or responsible 
person shall have the backflow prevention 
assembly tested by a certified backflow 
assembly tester at the time of installation, 
repair, or relocation and at least on an annual 
schedule thereafter or more often when 
required by the Administrative Authority. The 
periodic testing shall be performed in 
accordance with the procedures referenced in 
Table 14-1 by a tester qualified in accordance 
with those standards. 

603.3.3 Access and clearance shall be provided 
for the required testing, maintenance and repair. 
Access and clearance shall require a minimum of 
one (1) foot (305 mm) between the lowest 
portion of the assembly and grade, floor or 
platform. Installations elevated more than five 
(5) feet (1524 mm) above the floor or grade shall 
be provided with a permanent platform capable 
of supporting a tester or maintenance person. 

603.3.4 Direct connections between potable 
water piping and sewer connected wastes shall 
not exist under any condition with or without 
backflow protection. Where potable water is 
discharged to the drainage system it shall be by 
means of an approved airgap of two (2) pipe 
diameters of the supply inlet, but in no case shall 
the gap be less than one (1) inch (25.4 mm). 
Connection may be made to the inlet side of a 
trap provided that an approved atmospheric 
vacuum breaker is installed not less than six (6) 
inches (152 mm) above the flood level rim of 
such trapped fixture, so that at no time will any 
such device be subjected to any back-pressure. 

603.3.5 Backflow preventers for hot water over 
110°F (43.3°C) shall be a listed type designed to 
operate at temperatures of 110°F (43.3°C) or 
more without rendering any portion of the 
assembly inoperative. 

603.3.6 Fixtures, appliances or appurtenances 
with integral backflow preventers or integral 
airgaps manufactured as a unit shall be installed 
in accordance with their listing requirements. 

603.3.7 In cold climate areas, backflow 
assemblies and devices shall be protected from 
freezing by a method acceptable to the 
Administrative Authority. 

603.4 Specific Requirements 



603.4.1 Water Closet and Urinal Flushometer 

Valves shall be equipped with a listed 
atmospheric vacuum breaker. The vacuum 
breaker shall be installed on the discharge side 
of the flushometer valve with the critical level at 
least six (6) inches (152 mm) or the distance ac- 
cording to its listing above the overflow rim of a 
water closet bowl or the highest part of a urinal. 

603.4.2 Water Closet and Urinal Tanks shall be 
equipped with a listed ballcock. The ballcock 
shall be installed with the critical level at least 
one (1) inch (25.4 mm) above the full opening of 
the overflow pipe. In cases where the ballcock 
has no hush tube, the bottom of the water supply 
inlet shall be installed one (1) inch (25.4 mm) 
above the full opening of the overflow pipe. 
Water closets having the flush valve seat less 
than one (1) inch (25.4 mm) above the flood level 
rim of the closet bowl shall have the ballcock 
installed in a separate and isolated compartment 
of the tank, or shall be provided with a sheathed 
ballcock, or other equivalent protection. 

603.4.3 Water Closet Flushometer Tanks shall 
be protected against backflow by an approved 
backflow prevention assembly, device or 
method. 

603.4.4 Heat Exchangers 

603.4.4.1 Heat exchangers used for heat 
transfer, heat recovery, or solar heating shall 
protect the potable water system from being 
contaminated by the heat transfer medium. 
Double-wall heat exchangers shall separate 
the potable water from the heat transfer 
medium by providing a space between the 
two walls which is vented to the atmosphere. 

603.4.4.2 For alternate design see 
Appendix L. 

603.4.5 Inlets to Tanks, Vats, Sumps, 
Swimming Pools and other receptors when 
protected by a listed atmospheric vacuum 
breaker shall have such atmospheric vacuum 
breaker installed on the discharge side of the last 
valve with the critical level not less than six (6) 
inches (152 mm) or in accordance with its listing 
above the flood level rim of such equipment, 
and all downstream piping. Water supply inlets 
not protected by atmospheric vacuum breakers 
shall be protected by an approved airgap. Where 
atmospheric vacuum breakers or airgaps are not 
installed other backflow preventers suitable for 
the possible contamination or pollution may be 
installed in accordance with the requirements 
for that type of device or assembly as set forth in 
this chapter. 



48 



WATER SUPPLY AND DISTRIBUTION 



603.4 



603.4.6 Protection from Lawn Sprinklers 
and Irrigation Systems 

603.4.6.1 Potable water supplies to 
systems having no pumps or connections 
for pumping equipment, and no chemical 
injection or provisions for chemical 
injection, shall be protected from 
backflow by one of the following devices: 

1. Atmospheric vacuum breaker 

2. Pressure vacuum breaker 

3. Reduced pressure backflow preventor 

603.4.6.2 Where sprinkler and 
irrigation systems have pumps, 
connections for pumping equipment, 
auxiliary air tanks or are otherwise 
capable of creating back-pressure, the 
potable water supply shall be protected 
by the following type of device if the 
backflow device is located upstream 
from the source of back-pressure. 

1. Reduced pressure backflow 
preventor 

603.4.6.3 Where systems have a 
backflow device installed downstream 
from a potable water supply pump or a 
potable water supply pump connection, 
the device shall be one of the following: 

1. Atmospheric vacuum breaker 

2. Pressure vacuum breaker 

3. Reduced pressure backflow preventor 

603.4.6.4 Where systems include a 
chemical injector or any provisions for 
chemical injection, the potable water 
supply shall be protected by the following: 

1. Reduced pressure backflow preventor 

603.4.7 Potable Water Outlets with Hose 
Attachments, other than water heater 
drains, boiler drains, and clothes washer 
connections, shall be protected by a listed 
non-removable hose bibb type backflow 
preventer or by a listed atmospheric 
vacuum breaker installed at least six (6) 
inches (152 mm) above the highest point of 
usage and located on the discharge side of 
the last valve. In climates where freezing 
temperatures occur, a listed self-draining 
frost proof hose bibb with an integral 
backflow preventer shall be used. 

603.4.8 Faucets with Pull-Out Spouts shall 
be in compliance with the appropriate 
standards listed in Table 14-1 that include 
these specific types of faucets and require an 
atmospheric vacuum breaker or vent to 
atmosphere to protect the water supply. 



603.4.9 Water Cooled Compressors, De- | 
greasers or any other water cooled equipment 
shall be protected by a listed backflow preventer 
installed in accordance with the requirements of 
this chapter. 

Note: Some water cooled equipment may 
produce back-pressure and shall be 
equipped with the appropriate protection. 

603.4.10 Water Inlets to Water Supplied | 
Aspirators shall be equipped with a listed 
atmospheric vacuum breaker mounted at least 
six (6) inches (152 mm) above the aspirator unit 
or equipped with a listed backflow preventer 
installed in accordance with its listing re- 
quirements and this chapter. The discharge shall 
drain through an airgap. When using the 
tailpiece of a fixture to receive the discharge of 
an aspirator, the airgap shall be located above 
the flood level rim of the fixture. 

603.4.11 Potable Water Make Up Connections | 
to Steam or Hot Water Boilers shall be provided 
with a listed backflow protection assembly. 

603.4.12 Non-potable Water Piping. In cases | 
where it is impractical to correct individual cross- 
connections on the domestic water line, the line 
supplying such outlets shall be considered a non- 
potable water line. No drinking or domestic water 
outlets shall be connected to the non-potable 
water line. Whenever possible, all portions of the 
non-potable water line shall be exposed and all 
exposed portions shall be properly identified in a 
manner satisfactory to the Administrative 
Authority. Each outlet on the non-potable water 
line which may be used for drinking or domestic 
purposes shall be posted: "CAUTION: NON- 
POTABLE WATER, DO NOT DRINK". 

603.4.13 Potable Water Supply to Carbonators | 

shall be protected by a listed reduced pressure 
principle backflow preventer as approved by the 
Administrative Authority for the specific use. 

603.4.14 Water Treatment Units. Reverse 
osmosis drinking water treatment units shall 
meet the requirements of the appropriate 
standard(s) referenced in Table 14-1. Waste or 
discharge from reverse osmosis or other types of 
water treatment units shall enter the drainage 
system through an airgap. 

603.4.15 Backflow Preventers shall not be 
located in any area containing fumes that are 
toxic, poisonous or corrosive. 

603.4.16 Deck-Mounted, Equipment-Mounted 
Atmospheric and Spill-Proof Pressure-Type 
Vacuum Breakers shall be installed in 
accordance with their listing and the 



49 



603.4 - 604.6 



UNIFORM PLUMBING CODE 



manufacturer's instructions, with the critical 
level not less than one (1) inch (25.4 mm) above 
the flood level rim. 

603.4.17 Faucets with Hose-Attached Sprays 

shall vent to atmosphere under backsiphonage 
conditions. 

603.4.18 Protection from Fire Systems 

603.4.18.1 Except as provided under 
Sections 603.4.18.2 and 603.4.18.3 below, 
potable water supplies to fire protection 
systems, including but not limited to 
standpipes and automatic sprinkler systems, 
shall be protected from back-pressure and 
back-siphonage by one of the following 
testable devices: 

1. Double check valve assembly 

2. Double check detector assembly 

3. Reduced pressure backflow preventor 

4. Reduced pressure detector assembly 

603.4.18.2 Where fire protection systems 
supplied from a potable water system 
include a fire department (siamese) 
connection which is located less than 
seventeen hundred (1700) feet (518.2 m) 
from a non-potable water source that could 
be used by the fire department as a 
secondary water supply, the potable water 
supply shall be protected by one of the 
following: 

1. Reduced pressure backflow preventor 

2. Reduced pressure detector assembly 

Note: Non-potable water sources include 
fire department vehicles carrying water of 
questionable quality or water that is treated 
with antifreeze, corrosion inhibitors, or 
extinguishing agents. 

603.4.18.3 Where antifreeze, corrosion 
inhibitors, or other chemicals are added to a 
fire protection system supplied from a 
potable water supply, the potable water 
system shall be protected by one of the 
following: 

1. Reduced pressure backflow preventor 

2. Reduced pressure detector assembly 

603.4.18.4 Whenever a backflow device is 
installed in the potable water supply to a 
fire protection system, the hydraulic design 
of the system shall account for the pressure 
drop through the backflow device. If such 
devices are retrofitted for an existing fire 
protection system, the hydraulics of the 
sprinkler system design shall be checked to 



verify that there will be sufficient water 
pressure available for satisfactory operation 
of the fire sprinklers. 

603.4.19 Special Equipment, Water Supply 
Protection. Vacuum breakers for washer-hose 
bedpans shall be located not less than five (5) 
feet (1524 mm) above the floor. Hose 
connections in health care or laboratory areas 
shall not be less than six (6) feet (1829 mm) 
above the floor. 

603.4.20 Portable cleaning equipment, dental 
vacuum pumps and chemical dispensers shall 
be protected from backflow by an airgap, an 
atmospheric vacuum breaker, a spill-proof 
vacuum breaker, or a reduced pressure principle 
backflow preventer. 

604.0 Materials 

604.1 Water pipe and fittings shall be of brass, 
copper, cast iron, galvanized malleable iron, 
galvanized wrought iron, galvanized steel, or other 
approved materials. Cast iron fittings used for water 
need not be galvanized if over two (2) inches (51 
mm) in size. Asbestos-cement, CPVC, PE, or PVC 
water pipe manufactured to recognized standards 
may be used for cold water distribution systems 
outside a building. CPVC water pipe and tubing 
may be used for hot and cold water distribution 
systems within a building. All materials used in the 
water supply system, except valves and similar 
devices shall be of a like material, except where 
otherwise approved by the Administrative 
Authority. 

604.2 Copper tube for water piping shall have a 
weight of not less than Type L. 

Exception: Type M copper tubing may be used 
for water piping when piping is above ground 
in, or on, a building or underground outside of 
structures. 

604.3 In addition to the required incised marking, 
all hard drawn copper tubing shall be marked by 
means of a continuous and indelibly colored stripe at 
least one quarter (1/4) inch (6.4 mm) in width, as 
follows: Type K, green; Type L, blue; Type M, red; 
Type DWV, yellow. 

604.4 Listed flexible copper water connectors shall 
be installed in exposed locations, unless otherwise 
listed. 

604.5 Cast iron fittings up to and including two (2) 
inches (51 mm) in size, when used in connection 
with potable water piping shall be galvanized. 

604.6 All malleable iron water fittings shall be 
galvanized. 



50 



WATER SUPPLY AND DISTRIBUTION 



604.7 - 606.2 



604.7 Piping and tubing which has previously been 
used for any purpose other than for potable water 
systems shall not be used. 

604.8 Approved plastic materials may be used in 
water service piping, provided that where metal 
water service piping is used for electrical grounding 
purposes, replacement piping therefore shall be of 
like materials. 

Exception: Where a grounding system, 
acceptable to the Administrative Authority is 
installed, inspected, and approved, metallic pipe 
may be replaced with non-metallic pipe. 

604.9 Solder shall conform to the requirements of 
Section 316.1.3. 

604.10 Water pipe and fittings with a lead content 
which exceeds eight (8) percent shall be prohibited in 
piping systems used to convey potable water. 

605.0 Valves 

605.1 Valves up to and including two (2) inches (51 
mm) in size shall be brass or other approved 
material. Sizes over two (2) inches (51 mm) may have 
cast iron or brass bodies. Each gate valve shall be a 
fullway type with working parts of non-corrosive 
material. 

605.2 A fullway valve controlling all outlets shall be 
installed on the discharge side of each water meter 
and on each unmetered water supply. Water piping 
supplying more than one building on any one 
premises shall be equipped with a separate fullway 
valve to each building, so arranged that the water 
supply can be turned on or off to any individual or 
separate building; provided however, that supply 
piping to a single family residence and building 
accessory thereto, may be controlled on one valve. 
Such shutoff valves shall be accessible at all times. A 
fullway valve shall be installed on the discharge 
piping from water supply tanks at or near the tank. 
A fullway valve shall be installed on the cold water 
supply pipe to each water heater at or near the water 
heater. 

605.3 In multi-dwelling units, one (1) or more 
shutoff valves shall be provided in each dwelling 
unit so that the water supply to any plumbing fixture 
or group of fixtures in that dwelling unit can be shut 
off without stopping water supply to fixtures in 
other dwelling units. These valves shall be accessible 
in the dwelling unit that they control. 

605.4 All valves used to control two (2) or more 
openings shall be fullway gate valves or other 
approved valves designed and approved for the 
service intended. 

605.5 A control valve shall be installed immediately 



ahead of each water supplied appliance and 
immediately ahead of each slip joint or non-metallic 
fixture supply or appliance supply. 

605.6 All required shutoff or control valves shall be 
accessible. 

605.7 A single control valve shall be installed on a 
water supply line ahead of any automatic metering 
valve which supplies a battery of fixtures. 

606.0 Joints and Connections 

606.1 Types of Joints 

606.1.1 Flared Joints. Flared joints for soft 
copper water tubing shall be made with fittings 
meeting approved standards. The tubing shall 
be reamed to the full bore, resized to round and 
expanded with a proper flaring tool. 

606.1.2 Mechanical Joints. Mechanical joints 
for cast iron water pipe shall conform to 
nationally recognized standards. 

606.1.3 Mechanically Formed Tee Fittings. 

Mechanically extracted collars shall be formed in 
a continuous operation consisting of drilling a 
pilot hole and drawing out the tube surface to 
form a collar having a height not less than three 
(3) times the thickness of the branch tube wall. 

The branch tube shall be notched to conform 
with the inner curve of the run tube and shall 
have two (2) dimple /depth stops to insure that 
penetration of the branch tube into the collar is of 
sufficient depth for brazing and that the branch 
tube does not obstruct the flow in the main line 
tube. Dimple /depth stops shall be in line with 
the run of the tube. The second dimple shall be 
one quarter (1/4) inch (6.35 mm) above the first 
and shall serve as a visual point of inspection. 

All joints shall be brazed in accordance with 
Section 316.1.6. Soft soldered joints shall not be 
allowed. 

606.2 Use of Joints 

606.2.1 Copper Water Tube. Joints in copper 
tubing shall be made by the appropriate use of 
approved fittings properly soldered or brazed 
together, or by means of approved compression 
fittings as provided in Section 316.1.3 or Section 
606.1.1. Solder shall conform to the requirements 
of Section 316.1.3. Mechanically formed tee 
fittings shall be made by brazing only and shall 
conform to the requirements of Section 316.1.6. 

606.2.2 Plastic Fittings. Female PVC screwed 
fittings for water piping are prohibited. 

606.2.3 Slip Joints. In water piping, slip joints 
may be used only on the exposed fixture supply. 



51 



607.0 - 609.1 



UNIFORM PLUMBING CODE 



607.0 Gravity Supply Tanks 

Gravity tanks for potable water shall be tightly 
covered, and have not less than a sixteen (16) square 
inch (10,323 mm 2 ) overflow screened with copper 
screen having not less than fourteen (14) nor more 
than eighteen (18) openings per linear inch (25.4 mm). 

608.0 Water Pressure, Pressure Regulators, 
Pressure Relief Valves, and Vacuum Relief Valves 

608.1 Inadequate Water Pressure. Whenever the 
water pressure in the main or other source of supply 
will not provide a residual water pressure of at least 
fifteen (15) pounds per square inch (103.4 kPa), after 
allowing for friction and other pressure losses, a tank 
and a pump or other means which will provide said 
fifteen (15) pound (103.4 kPa) pressure shall be 
installed. Whenever fixtures and /or fixture fittings 
are installed, which require residual pressure higher 
than fifteen (15) pounds per square inch (103.4 kPa), 
that minimum residual pressure shall be provided. 

608.2 Excessive Water Pressure. Where local 
static water pressure is in excess of eighty (80) 
pounds per square inch (552 kPa), an approved type 
pressure regulator preceded by an adequate strainer 
shall be installed and the static pressure reduced to 
eighty (80) pounds per square inch (552 kPa) or less. 
For potable water services up to and including one 
and one-half (1-1/2) inch (38 mm) regulators, 
provision shall be made to prevent pressure on the 
building side of the regulator from exceeding main 
supply pressure. Approved regulators with integral 
bypasses are acceptable. Each such regulator and 
strainer shall be accessibly located and shall have the 
strainer readily accessible for cleaning without 
removing the regulator or strainer body or 
disconnecting the supply piping. All pipe size 
determinations shall be based on eighty (80) percent 
of the reduced pressure when using Table 6-5. 

608.3 Any water system provided with a check 
valve or a pressure regulating device which does not 
have a bypass feature at its source shall be provided 
with an approved, listed, adequately sized pressure 
relief valve. 

Any water system containing storage water 
heating equipment shall be provided with an 
approved, listed, adequately sized combination 
pressure and temperature relief valve, except for 
listed non-storage instantaneous heaters having an 
inside diameter of not more than three (3) inches (76 
mm). Each such approved combination temperature 
and pressure relief valve shall be installed on the 
water heating device in an approved location based 
on its listing requirements and the manufacturer's 
instructions. Each such combination temperature 



and pressure relief valve shall be provided with a 
drain as required in Section 608.5. 

In addition to the required pressure or 
combination pressure and temperature relief valve, an 
approved, listed expansion tank or other device 
designed for intermittent operation for thermal 
expansion control shall be installed whenever the 
building supply pressure is greater than the required 
relief valve pressure setting or when any device is 
installed that prevents pressure relief through the 
building supply. The tank or device shall be sized in 
accordance with the manufacturer's recommendation. 

608.4 Each pressure relief valve shall be an 
approved automatic type with drain, and each such 
relief valve shall be set at a pressure of not more than 
one hundred fifty (150) pounds per square inch (1035 
kPa). No shutoff valve shall be installed between the 
relief valve and the system or in the drain line. 

608.5 Relief valves located inside a building shall be 
provided with a drain, not smaller than the relief 
valve outlet, of galvanized steel, hard drawn copper 
piping and fittings, CPVC, or listed relief valve drain 
tube with fittings which will not reduce the internal 
bore of the pipe or tubing (straight lengths as 
opposed to coils) and shall extend from the valve to 
the outside of the building with the end of the pipe 
not more than two (2) feet (610 mm) nor less than six 
(6) inches (152 mm) above the ground or the flood 
level of the area receiving the discharge and pointing 
downward. Such drains may terminate at other 
approved locations. No part of such drain pipe shall 
be trapped and the terminal end of the drain pipe 
shall not be threaded. 

608.6 Any water heating device connected to a 
separate storage tank and having valves between 
said heater and tank shall be provided with an 
approved water pressure relief valve. 

608.7 Vacuum Relief Valves. Where a hot water 
storage tank or an indirect water heater is located at 
an elevation above the fixture outlets in the hot 
water system, a vacuum relief valve shall be installed 
on the storage tank or heater. 

609.0 Installation, Testing, Unions, and Location | 

609.1 Installation. All water piping shall be 
adequately supported to the satisfaction of the 
Administrative Authority. Burred ends shall be 
reamed to the full bore of the pipe or tube. Changes 
in direction shall be made by the appropriate use of 
fittings, except that changes in direction in copper 
tubing may be made with bends, provided that such 
bends are made with bending equipment which does 
not deform or create a loss in the cross-sectional area 
of the tubing. Provisions shall be made for expansion 



52 



WATER SUPPLY AND DISTRIBUTION 



609.1 -609.8 



in hot water piping. All piping, equipment, 
appurtenances, and devices shall be installed in a 
workman-like manner in conformity with the 
provisions and intent of the Code. All water service 
yard piping shall be at least twelve (12) inches (305 
mm) below the average local frost depth. The 
minimum cover shall be twelve (12) inches (305 mm) 
below finish grade. 

609.2 Water pipes shall not be run or laid in the 
same trench as building sewer or drainage piping 
constructed of clay or materials which are not 
approved for use within a building unless both of 
the following conditions are met: 

609.2.1 The bottom of the water pipe, at all 
points, shall be at least twelve (12) inches (305 
mm) above the top of the sewer or drain line. 

609.2.2 The water pipe shall be placed on a 
solid shelf excavated at one side of the common 
trench with a minimum clear horizontal distance 
of at least twelve (12) inches (305 mm) from the 
sewer or drain line. 

Water pipes crossing sewer or drainage piping 
constructed of clay or materials which are not 
approved for use within a building shall be laid a 
minimum of twelve (12) inches (305 mm) above the 
sewer or drain pipe. 

609.3 Water piping installed within a building and 
in or under a concrete floor slab resting on the 
ground shall be installed in accordance with the 
following requirements: 

609.3.1 Ferrous piping shall have a protective 
coating of an approved type, machine applied 
and conforming to recognized standards. Field 
wrapping shall provide equivalent protection 
and is restricted to those short sections and 
fittings necessarily stripped for threading. Zinc 
coating (galvanizing) shall not be deemed 
adequate protection for piping or fittings. 
Approved non-ferrous piping need not be 
wrapped. 

609.3.2 Copper tubing shall be installed 
without joints where possible. Where joints are 
permitted, they shall be brazed and fittings shall 
be wrought copper. 

Note: For the purpose of this section, " within the 
building" shall mean within the fixed limits of 
the building foundation. 

609.4 Testing. Upon completion of a section or of 
the entire hot and cold water supply system, it shall 
be tested and proved tight under a water pressure 
not less than the working pressure under which it is 
to be used. The water used for tests shall be obtained 



from a potable source of supply. A fifty (50) pound 
per square inch (344.5 kPa) air pressure may be 
substituted for the water test. In either method of 
test, the piping shall withstand the test without 
leaking for a period of not less than fifteen (15) 
minutes. 

609.5 Unions. Unions shall be installed in the water 
supply piping within twelve (12) inches (305 mm) of 
regulating equipment, water heating, conditioning 
tanks, and similar equipment which may require 
service by removal or replacement in a manner 
which will facilitate its ready removal. 

609.6 Location. Except as provided in Section 609.7, | 
no building supply shall be located in any lot other 
than the lot which is the site of the building or 
structure served by such building supply. 

609.7 Nothing contained in this Code shall be | 
construed to prohibit the use of all or part of an 
abutting lot to: 

609.7.1 Provide access to connect a building | 
supply to an available public water service, 
when proper cause and legal easement not in 
violation of other requirements have been first 
established to the satisfaction of the 
Administrative Authority. 

609.7.2 Provide additional space for a building | 
supply when proper cause, transfer of 
ownership, or change of boundary not in 
violation of other requirements have been first 
established to the satisfaction of the 
Administrative Authority. The instrument 
recording such action shall constitute an 
agreement with the Administrative Authority, 
which shall clearly state and show that the areas 
so joined or used shall be maintained as a unit 
during the time they are so used. Such an 
agreement shall be recorded in the office of the 
County Recorder as a part of the conditions of 
ownership of said properties, and shall be 
binding on all heirs, successors, and assigns to 
such properties. A copy of the instrument 
recording such proceedings shall be filed with 
the Administrative Authority. 

609.8 Low Pressure Cutoff Required on Booster I 
Pumps for Water Distribution Systems. When a 
booster pump - excluding a fire pump - is connected 
to a water service or underground water pipe, a low- 
pressure cutoff switch on the inlet side of the pump 
shall be installed within five (5) feet (1524 mm) of the 
inlet. The cutoff switch shall be set for not less than 
ten (10) psi (68.9 kPa) or as required by the 
Administrative Authority. A pressure gauge shall be 
installed between the shutof f valve and the pump. 



53 



Table 6-4 



UNIFORM PLUMBING CODE 



TABLE 6-4 
Water Supply Fixture Units (WSFU) and Minimum Fixture Branch Pipe Sizes 



Minimum 
Fixture Outlet 
Individual Fixtures 2 Pipe Size 1 

Bar Sink 1/2" 

Bathtub or Combination Bath/Shower 1/2" 

Bidet 1/2" 

Clinic Sink 1/2" 

Clotheswashwer, domestic 1/2" 

Dental Unit, cuspidor 1/2" 

Dishwasher, domestic 1/2" 

Drinking Fountain or Watercooler 1/2" 

Hose Bibb 1/2" 

Hose Bibb, each additional 1/2" 

Kitchen Sink, domestic 1/2" 

Laundry Sink 1/2" 

Lavatory 1/2" 

Lawn Sprinkler, each head 

Mobile Home, each 

Service Sink or Mop Basin 1/2" 

Shower 1/2" 

Shower, continous use 1/2" 

Urinal, 1.0 GPF 

Urinal, greater than 1 .0 GPF 

Urinal, flush tank 1/2" 

Washfountain, circular spray 3/4" 

Washup Sink, each set of faucets 1/2" 

Water Closet, 1.6 GPF Gravity Tank 1/2" 

Water Closet, 1.6 GPF Flushometer Tank 1/2" 

Water Closet, 1.6 GPF Flushometer Valve 1" 

Water Closet, 3.5 GPF Gravity Tank 1/2" 

Water Closet, 3.5 GPF Flushometer Valve 1" 

Whirlpool Bath or Combination Bath/Shower 1/2" 



Private 


Public 


Individual 


3 or more 


General 


Heavy-Use 


Dwelling 


Dwellings 


Use 


Assembly 


1.0 


1.0 


2.0 




4.0 


3.5 






1.0 


0.5 


8.0 




4.0 


2.5 


4.0 
1.0 




1.5 


1.0 


1.5 








0.5 


0.75 


2.5 


2.5 


2.5 




1.0 


1.0 


1.0 




1.5 


1.0 


1.5 




2.0 


1.0 


2.0 




1.0 


0.5 


1.0 


1.0 


1.0 


1.0 


1.0 




12.0 


12.0 


3.0 




2.0 


2.0 


2.0 
5.0 








4.0 


5.0 






5.0 


6.0 






3.0 


4.0 






4.0 








2.0 




2.5 


2.5 


2.5 


4.0 


2.5 


2.5 


2.5 


3.5 


5.0 


5.0 


5.0 


8.0 


3.0 


3.0 


5.5 


7.0 


7.0 


7.0 


8.0 


10.0 


4.0 


4.0 







Notes: 



1. 
2. 
3. 



Size of the cold branch outlet pipe, or both the hot and cold branch outlet pipes. 
For unlisted fixtures, refer to a listed fixture with a similar flow rate and frequency of use. 
The listed fixture unit values represent their total load on the cold water service. The separate cold water 
and hot water fixture unit value for fixtures having both cold and hot water connections shall each be taken 
as three-quarters (3/4) of the listed total value of the fixture. 

The listed minimum supply branch pipe sizes for individual fixtures are the nominal (I.D.) pipe size. 
"General use" applies to business, commercial, industrial, and assembly occupancies other than those 
defined under "Heavy-use." Included are the public and common areas in hotels, motels, and multi-dwelling 
buildings 

"Heavy-use assembly" applies to toilet facilities in occupancies which place a heavy, but intermittent, time- 
based demand on the water supply system, such as schools, auditoriums, stadiums, race courses, 
transportation terminals, theaters, and similar occupancies where queuing is likely to occur during periods 
of peak use. 

For fixtures or supply connections likely to impose continuous flow demands, determine the required flow in 
gallons per minute (GPM) and add it separately to the demand (in GPM) for the distribution system or 
portions thereof. 



54 



WATER SUPPLY AND DISTRIBUTION 



Table 6-5 



Pressure Range - 30 

Meter Building 
and Supply 
Street and 
Service, Branches, 
Inches Inches 40 
(12) 

6 
16 
29 
36 



TABLE 6-5 

Fixture Unit Table for Determining Water Pipe and Meter Sizes 

to45psi(207to310kPa)** 



3/4 

3/4 

3/4 

1 

3/4 

1 

1-1/2 

1 
1-1/2 
2 
1 
1-1/2 
2 
2 



1/2" 

3/4 

1 

1 

1-1/4 36 

1-1/4 54 

1-1/4 78 

1-1/2 85 

1-1/2 150 

1-1/2 151 

2 85 

2 220 

2 370 

2-1/2 445 



60 

(18) 

5 

16 

25 

31 

33 

47 

68 

84 

124 

129 

85 

205 

327 

418 



80 
(24) 

4 

14 

23 

27 

31 

42 

57 

79 

105 

129 

85 

190 

292 

390 



100 
(30) 

3 
12 
21 
25 
28 
38 
48 
65 
91 

110 
85 

176 

265 

370 



Maximum Allowable Length in Feet (meters) 



Inch 


mm 


1/2 


12.7 


3/4 


19.1 


1 


25.4 


1-1/4 


31.8 


1-1/2 


38.1 


2 


50.8 


2-1/2 


63.5 



150 
(46) 

2 
9 

17 

20 

24 

32 

38 

56 

70 

80 

85 

155 

217 

330 



200 
(61) 

1 

6 

15 

17 

23 

28 

32 

48 

57 

64 

85 

138 

185 

300 



250 
(76) 

1 
5 

13 

15 

21 

25 

28 

43 

49 

53 

82 
127 
164 
280 



300 
(91) 

1 

5 

12 

13 

19 

23 

25 

38 

45 

46 

80 

120 

147 

265 



400 
(122) 


4 

10 

12 

17 

19 

21 

32 

36 

38 

66 
104 
124 
240 



500 
(152) 


4 
8 

10 
16 
17 
18 
28 
31 
32 
61 
85 
96 
220 



600 
(183) 



3 

6 

8 

13 
14 
15 
26 
26 
27 
57 
70 
70 
198 



700 
(213) 



2 

6 

6 

12 
12 
12 
22 
23 
23 
52 
61 
61 
175 



800 
(244) 


2 
6 
6 

12 
12 
12 
21 
21 
21 
49 
57 
57 
158 



900 
(274) 



2 

6 

6 

11 

11 

11 

20 

20 

20 

46 

54 

54 

143 



1000 
(305) 



1 

6 

6 
11 
11 
11 
20 
20 
20 
43 
51 
51 
133 



Pressure Range - 46 to 

3/4 1/2*** 



3/4 
3/4 

1 
3/4 

1 
1-1/2 

1 
1-1/2 

2 

1 
1-1/2 

2 

2 



3/4 

1 

1 
1-1/4 
1-1/4 
1-1/4 
1-1/2 
1-1/2 
1-1/2 

2 

2 

2 
2-1/2 



7 

20 

39 

39 

39 

78 

78 

85 

151 

151 

85 

370 

370 

654 



60psi 

7 

20 

39 

39 

39 

78 

78 

85 
151 
151 

85 
370 
370 
640 



(317 to 

6 

19 

36 

39 

39 

76 

78 

85 
151 
151 

85 
340 
370 
610 



414 kPa)** 

5 4 



17 

33 

36 

39 

67 

78 

85 

151 

151 

85 

318 

370 

580 



14 

28 

30 

39 

52 

66 

85 

128 

150 

85 

272 

368 

535 



3 

11 

23 

25 

39 

44 

52 

85 

105 

117 

85 

240 

318 

500 



2 
9 
21 
23 
34 
39 
44 
80 
90 
98 
85 
220 



2 
8 

19 
20 
32 
36 
39 
67 
78 
84 
85 
198 



280 250 
470 440 



1 

6 

17 

18 

27 

30 

33 

55 

62 

67 

85 

170 

205 

400 



1 
5 
14 
15 
25 
27 
29 
49 
52 
55 
85 



1 
4 
12 
12 
22 
24 
24 
41 
42 
42 
85 



150 135 
165 142 
365 335 





4 

10 

10 

19 

20 

20 

37 

38 

38 

85 

123 

123 

315 





3 

9 

9 

19 

19 

19 

34 

35 

35 

85 

110 

110 

285 





3 

8 

8 

17 

17 

17 

32 

32 

32 

83 

102 

102 





3 

8 

8 

16 

16 

16 

30 

30 

30 

80 

94 

94 



267 250 



Pressure Range - Over 60 psi (414 kPa)* 



3/4 

3/4 

3/4 

1 

3/4 

1 

1-1/2 

1 
1-1/2 
2 
1 
1-1/2 
2 
2 



7 
20 
39 
39 



1/2*" 

3/4 

1 

1 

1-1/4 39 

1-1/4 78 

1-1/4 78 

1-1/2 85 

1-1/2 151 

1-1/2 151 

2 85 

2 370 

2 370 

2-1/2 654 



7 

20 

39 

39 

39 

78 

78 

85 

151 

151 

85 

370 

370 

654 



7 

20 

39 

39 

39 

78 

78 

85 

151 

151 

85 

370 

370 

654 



6 

20 

39 

39 

39 

78 

78 

85 

151 

151 

85 

370 

370 

654 



5 

17 

35 

38 

39 

74 

78 

85 

151 

151 

85 

360 

370 

654 



4 

13 

30 

32 

39 

62 

74 

85 

151 

151 

85 

335 

370 

650 



3 
11 
27 
29 
39 
53 
65 
85 
130 
142 
85 



3 
10 
24 
26 
39 
47 
54 
85 
113 
122 
85 



305 282 
370 340 
610 570 



2 

8 

21 

22 

34 

39 

43 

81 

88 

98 

85 

244 

288 

510 



1 

7 

17 

18 

28 

31 

34 

64 

73 

82 

85 

212 

245 

460 



1 
6 

14 

14 

26 

26 

26 

51 

51 

64 

85 

187 

204 

430 



1 

6 

13 

13 

25 

25 

25 

48 

51 

51 

85 

172 

172 

404 



1 

5 

12 

12 

23 

23 

23 

46 

46 

46 

85 

153 

153 

380 



1 

4 

12 

12 

22 

22 

22 

43 

43 

43 

85 

141 

141 





4 

11 

11 

21 

21 

21 

40 

40 

40 

85 

129 

129 



356 329 



* Available static pressure after head loss. 

**Building supply, three-quarter (3/4) inch (19.1 mm) nominal size minimum. 



55 



609.9-610.7 



UNIFORM PLUMBING CODE 



I 609.9 Disinfection of Potable Water System. 

New or repaired potable water systems shall be 
disinfected prior to use whenever required by the 
Administrative Authority. The method to be 
followed shall be that prescribed by the health 
authority or, in case no method is prescribed by 
them, the following: 

| 609.9.1 The pipe system shall be flushed with 

clean, potable water until only potable water 
appears at the points of outlet. 

| 609.9.2 The system or parts thereof shall be 

filled with a water-chlorine solution containing 
at least fifty (50) parts per million of chlorine, 
and the system or part thereof shall be valved- 
off and allowed to stand for twenty-four (24) 
hours; or, the system or part thereof shall be 
filled with a water-chlorine solution containing 
at least two hundred (200) parts per million of 
chlorine and allowed to stand for three (3) hours. 

I 609.9.3 Following the allowed standing time, 

the system shall be flushed with clean, potable 
water until the chlorine residual in the water 
coming from the system does not exceed the 
chlorine residual in the flushing water. 

| 609.9.4 The procedure shall be repeated if it is 

shown by bacteriological examination made by 
an approved agency that contamination persists 
in the system. 

| 609.10 Water Hammer. All building water supply 
systems in which quick-acting valves are installed 
shall be provided with devices to absorb high 
pressures resulting from the quick closing of these 
valves. These pressure-absorbing devices shall be 
either air chambers or approved mechanical devices. 
Water pressure shock arrestors shall be installed as 
close as possible to quick-acting valves at the end of 
long pipe or near batteries of fixtures or both. 

I 609.10.1 Air Chambers. Where air chambers 

are installed, they shall be in an accessible place, 
and each air chamber shall be provided with an 
accessible means for restoring the air in the 
event that the chamber becomes waterlogged. 

| 609.10.2 Mechanical Devices. Where listed 

mechanical devices are used, the manufacturer's 
specifications as to location and method of 
installation shall be followed. 

610.0 Size of Potable Water Piping 

61 0.1 The size of each water meter and each potable 
water supply pipe from the meter or other source of 
supply to the fixture supply branches, risers, 
fixtures, connections, outlets, or other uses shall be 
based on the total demand and shall be determined 
according to the methods and procedures outlined in 
this section. 



610.2 Whenever a water filter, water softener or 
similar water treating device, backflow prevention 
device, or similar device is installed in any water 
supply line, the pressure loss through such devices 
must be included in the pressure loss calculations of 
the system, and the water supply pipe and meter 
shall be adequately sized to provide for any such 
pressure loss. 

No water filter, water softener, backflow 
prevention device, or similar device regulated by this 
Code shall be installed in any potable water supply 
piping when the diameter of the inlet or outlet of any 
such device or its connecting piping is less than the 
diameter of such water supply piping, or when the 
installation of such device produces an excessive 
pressure drop in any such water supply piping. 

All such devices shall be of a type approved by 
the Administrative Authority and shall be tested for 
flow rating and pressure loss by an approved 
laboratory or recognized testing agency to standards 
consistent with the intent of this chapter. 

610.3 The quantity of water required to be supplied 
to every plumbing fixture shall be represented by 
fixture units, as shown in Table 6-4. Equivalent 
fixture values shown in Table 6-4 include both hot 
and cold water demand. 

610.4 Where the maximum length of supply piping 
is two hundred (200) feet (60,960 mm) or less, each 
water piping system of fifty (50) fixture units or less 
shall be sized in accordance with the values set forth 
in Table 6-5. Other systems of more than fifty (50) 
fixture units and within the range of Table 
6-5 may be sized from that table or by the method set 
forth in Section 610.5. 

610.5 Except as provided in Section 610.4, the size of 
each water piping system shall be determined in 
accordance with the procedure set forth in Appendix 
A. For alternate methods of sizing water supply 
systems, see Appendix L. 

610.6 Except where the type of pipe used and the 
water characteristics are such that no decrease in 
capacity due to length of service (age of system) may 
be expected, all friction loss data shall be obtained 
from the "Fairly Rough" or "Rough" charts in 
Appendix A of this Code. Friction or pressure losses 
in water meter, valve and fittings shall be obtained 
from the same sources. Pressure losses through 
water treating equipment, backflow prevention 
devices, or other flow restricting devices shall be 
computed as required by Section 610.2. 

610.7 On any proposed water piping installation 
sized using Table 6-5, the following conditions shall 
be determined: 

(1) Total number of fixture units as determined 
from Table 6-4, Equivalent Fixture Units, for the 
fixtures to be installed. 



56 



WATER SUPPLY AND DISTRIBUTION 



610.7- Example 



(2) Developed length of supply pipe from meter 
to most remote outlet. 

(3) Difference in elevation between the meter or 
other source of supply and the highest fixture or 
outlet. 

(4) Pressure in the street main or other source of 
supply at the locality where the installation is to 
be made. 

(5) In localities where there is a fluctuation of 
pressure in the main throughout the day, the 
water piping system shall be designed on the 
basis of the minimum pressure available. 

610.8 Size of Meter and Building Supply Pipe 
Using Table 6-5. Knowing the available pressure at 
the water meter or other source of supply, and after 
subtracting one-half (1/2) pound per square inch 
pressure (3.4 kPa) for each foot (305 mm) of 
difference in elevation between such source of supply 
and highest water supply outlet in the building or on 
the premises, use the "pressure range" group within 
which this pressure will fall. Select the "length" 
column which is equal to or longer than the required 
length. Follow down the column to a fixture unit 
value equal to or greater than the total number of 
fixture units required by the installation. Having 
located the proper fixture unit value for the required 
length, sizes of meter and building supply pipe will 
be found in the two left-hand columns. 

No building supply pipe shall be less than three- 
quarter (3/4) inch (19.1 mm) in diameter. 

610.9 Size of Branches. The size of each branch 
when using Table 6-5 shall be determined by the 
number of fixture units to be served by that branch, 
utilizing the total developed length of the system 
[See Section 610.7(2)]. 

610.10 Sizing for Flushometer Valves. When 
using Table 6-5 to size water supply systems serving 
flushometer valves, the number of flushometer 
fixture units assigned to every section of pipe, 
whether branch or main, shall be determined by the 
number and category of flushometer valves served 
by that section of pipe, in accordance with Table 6-6. 
Piping supplying a flushometer valve shall not be 
less in size man the valve inlet. 

TABLE 6-6 

Flushometer Fixture Units for Water Sizing Using Table 6-5 



Sizing Method 
Example Using TABLE 6-6 

Public Use Fixtures 





LAV LAV UR UR WC WC 
1 1 1 1 1 1 




F E D C B A 


LAV LAV UR UR WC WC 




I I I 1 I I 




G H 1 J K L 






<— M 




LAV UR WC LAV UR WC 




1 1 1 1 1 1 




S R Q P N 


T_> 





Number of 
Flushometer Valves 

1 
2 
3 
4 
5 or more 



Fixture Categories 

Fixture Units Assigned 

for Water Closets and 

Similar Fixtures 



Fixture Units Assigned 

for Urinals and Similar 

Fixtures 



40 

70 

90 

105 

115 plus 10 for each 

additional fixture 

in excess of 5 



20 

35 

45 

53 

58 plus 5 for each 

additional fixture 

in excess of 5 



When using Table 6-6 to size water piping, care 
must be exercised to assign flushometer fixture 
units based on the number and category of 
fixtures served. In the example above, fixture 
units assigned to each section of pipe are 
computed as follows: Note: Each capital letter 
refers to the section of pipe above it, unless 
otherwise shown. 

A: 1 WC = 40F.U. 

B: 2WC = 70F.U. 

C: 2 WC (70) + 1 UR (20) = 90 F.U. 

D: 2 WC (70) + 2 UR (35) = 105 F.U. 

E: 2 WC (70) + 2 UR (35) + 1 LAV (1) = 106 F.U. 

F: 2 WC (70) + 2 UR (35) + 2 LAV (2) = 1 07 F.U. 

G: 1 LAV = 1 F.U. 

H: 2 LAV = 2 F.U. 

I: 2 LAV (2) + 1 UR (20) = 22 F.U. 

J: 2 LAV (2)+ 2 UR (35) =37 F.U. 

K: 2 LAV (2) + 2 UR (35) + 1 WC (40) = 77 F.U. 

L: 2 LAV (2) + 2 UR (35) + 2 WC (70) = 107 F.U. 

M: 4 WC (105) + 4 UR (53) + 4 LAV (4) = 162 F.U. 

N: 1 WC = 40F.U. 

O: 1 WC (40) + 1 UR (20) = 60 F.U. 

P: 1 WC (40) + 1 UR (20) + 1 LAV (1) = 61 F.U. 

Q: 2 WC (70) + 1 UR (20) + 1 LAV (1) = 91 F.U. 

R: 2 WC (70) + 2 UR (35) + 1 LAV (1) = 106 F.U. 

S: 2 WC (70) + 2 UR (35) + 2 LAV (2) = 107 F.U. 

T: 6 WC (125) + 6 UR (63) + 6 LAV (6) = 194 F.U. 



57 



610.11 -611.0 



UNIFORM PLUMBING CODE 



610.11 Sizing Systems for Flushometer Tanks. 

The size of branches and mains serving flushometer 
tanks shall be consistent with the sizing procedures 
for flush tank water closets. 

610.12 Sizing Systems with Hot Water Piping. In 

sizing a water piping system, the greatest developed 
length of the cold water supply may be used (from 
Table 6-5) and the length of the hot water piping 
ignored when the hot water piping friction loss is 
compensated for by the following method: 

(1) Compute the total hot water fixture unit 
demand, using those values given in Table 6-4 
for the combined hot and cold water use. 

(2) Assign the total demand computed as 
required in (1) above, as the fixture unit demand 
at the hot water heater inlet. 

(3) Starting at the most remote outlet on the 
cold water piping and working back toward the 
water meter, compute the pipe sizing for the 
system from the column originally selected in 
Table 6-5, using the fixture unit values given in 
Table 6-4, and adding in the fixture unit demand 
of the hot water heater supply inlet as computed 
in (1) above, at the point where it occurs. The 
final size of the cold water branch or main need 
not exceed the originally established size of the 
building supply. 

610.13 Except as provided in Section 610.12, water 
piping systems may be designed by taking the total 
length of the supply piping from the source of cold 
water supply through the water heater, to the most 
remote hot water outlet and assessing flow values of 
seventy-five (75) percent of the combined hot and 
cold water demand as given in Table 6-4, to the 
piping supplying either hot or cold water to those 
fixtures served by both. Piping serving water heaters 
shall be sized to deliver the above required hot water 
demand, plus all required cold water demands, but 
in no case need the piping be larger in size than that 
required by Table 6-5 for the total building supply. 

610.14 Exceptions. The provisions of this section 
relative to size of water piping need not apply to the 
following: 

(1) Water supply piping systems designed in 
accordance with recognized engineering 
procedures acceptable to the Administrative 
Authority. 

(2) Alteration of or minor additions to existing 
installations, provided the Administrative 
Authority finds that there will be a reasonably 
adequate supply of water for all fixtures. 

(3) Replacement of existing fixtures or 
appliances. 



(4) Piping which is part of fixture equipment. 

(5) Unusual conditions where, in the judgement 
of the Administrative Authority, a reasonably 
adequate supply of water is provided. 

(6) Non-potable water lines as defined in Section 
603.4.12. 

(7) The size and material of irrigation water 
piping installed outside of any building or 
structure and separated from the potable water 
supply by means of an approved airgap or 
backflow prevention device is not regulated by 
this Code. The potable water piping system 
supplying each such irrigation system shall be 
adequately sized as required elsewhere in this 
chapter to deliver the full connected demand of 
both systems. 

61 1 .0 Water Treatment Units 

Drinking water treatment units and reverse osmosis 
drinking water treatment units shall meet the 
requirements of the appropriate standard referenced 
in Table 14-1 or Appendix C Discharge from all 
drinking water treatment units shall enter the 
drainage system through an airgap. 



See also Appendix A, Recommended Rules for 
Sizing the Water Supply System, and Appendix L, 
Alternate Plumbing Systems, for alternate methods 
of sizing water supply systems. 



58 



CHAPTER 7 



SANITARY DRAINAGE 



PART I - DRAINAGE SYSTEMS 

701.0 Materials 

701.1 Drainage piping shall be cast iron, galvanized 
steel, galvanized wrought iron, lead, copper, brass, 
Schedule 40 ABS DWV, Schedule 40 PVC DWV, 
extra strength vitrified clay pipe, or other approved 
materials having a smooth and uniform bore, except 
that: 

701.1.1 No galvanized wrought iron or 
galvanized steel pipe shall be used underground 
and shall be kept at least six (6) inches (152 mm) 
above ground. 

701.1.2 ABS and PVC DWV piping installations 
shall be limited to structures not exceeding three 
floors above grade. For the purpose of this 
subsection, the first floor of a building shall be 
that floor that has fifty (50) percent or more of 
the exterior wall surface area level with or above 
finished grade. One additional level that is the 
first level and not designed for human 
habitation and used only for vehicle parking, 
storage, or similar use shall be permitted. 

701 .1 .3 No vitrified clay pipe or fittings shall be 
used above ground or where pressurized by a 
pump or ejector. They shall be kept at least 
twelve (12) inches (305 mm) below ground. 

701 .1 .4 Copper tube for underground drainage 
and vent piping shall have a weight of not less 
than that of copper drainage tube type DWV. 

701.1.5 Copper tube for above ground drainage 
and vent piping shall have a weight of not less 
than that of copper drainage tube type DWV. 

701.2 Drainage fittings shall be of cast iron, 
malleable iron, lead, brass, copper, ABS, PVC, 
vitrified clay, or other approved materials having a 
smooth interior waterway of the same diameter as 
the piping served and all such fittings shall be 
compatible with the type of pipe used. 

701 .2.1 Fittings on screwed pipe shall be of the 
recessed drainage type. Burred ends shall be 
reamed to the full bore of the pipe. 

701 .2.2 The threads of drainage fittings shall be 
tapped so as to allow one-quarter (1/4) inch per 
foot (20.9 mm/m) grade. 

701 .2.3 Fittings used for drainage shall be of the 
drainage type, have a smooth interior waterway, 
and be constructed so as to allow one fourth 
(1/4) inch (20.9 mm/m) per foot grade. 



701.3 Lead 

See Table 14-1. Sheet lead shall be not less than the 
following: 

For safe pans - not less than four (4) pounds per 
square foot (19.5 kg/m 2 ) or 1 / 16 inch (1.6 mm) thick. 

For flashings or vent terminals - not less than 
three (3) pounds per square foot (15 kg/m 2 ) or 1.2 
mm thick. 

Lead bends and lead traps shall not be less than 
one-eighth (1/8) inch (3.2 mm) wall thickness. 

701.4 Ferrules and Bushings 

701.4.1 Caulking ferrules shall be manufactured 
from bronze or copper and shall be in 
accordance with Table 7-1. 

701 .4.2 Soldering bushings shall be of bronze or 
copper in accordance with Table 7-2. 

TABLE 7-1 

Caulking Ferrules 



Pipe size 
(inches) 


Inside 
diameter 
(inches) 


Length 
(inches) 


Minimum 

weight each 

Lb. Oz. 


2 
3 

4 


2-1/4 
3-1/4 
4-1/4 


4-1/2 
4-1/2 
4-1/2 


1 

1 12 

2 8 



Pipe size 

(mm) 



51 

76 

102 



TABLE 7-1 

Caulking Ferrules (Metric) 



Inside 

diameter 

(mm) 



57 

83 

108 



Length 
(mm) 



114 
114 
114 



Minimum 

weight each 

(kg) 



0.454 
0.790 
1.132 



TABLE 7-2 

Soldering Bushings 



Pipe size 
(inches) 


Minimum 

weight each 

Lb. Oz. 


Pipe size 
(inches) 


Minimum 

weight each 

Lb. Oz. 


1-1/4 

1-1/2 

2 


6 
8 
14 


2-1/2 
3 
4 


1 6 

2 

3 8 



TABLE 7-2 

Soldering Bushings (Metric) 



Pipe size 
(mm) 


Minimum 

weight each 

(kg) 


Pipe size 
(mm) 


Minimum 

weight each 

(kg) 


32 
38 

51 


0.168 
0.224 
0.392 


64 

76 

102 


0.622 
0.908 
1.586 



59 



Table 7-3 



UNIFORM PLUMBING CODE 



TABLE 7-3 
Drainage Fixture Unit Values (DFU) 

Min. Size Private Public 

Trap and Individual 3 or more General Heavy-Use 

Individual Fixtures Trap Arm 7 Dwelling Dwellings Use Assembly 

Bar Sink 1-1/2" 1.0 1.0 

Bar Sink 1-1/2" 2 2.0 

Bathtub or Combination Bath/Shower 1-1/2" 3.0 3.0 

Bidet, 1-1/4" trap 1-1/4" 1.0 1.0 

Clinical Sink, 3" trap 3" 6.0 

Clothes Washer, domestic, 2" standpipe 5 2" 3.0 3.0 3.0 

Dental Unit, cuspidor 1-1/4" 1.0 

Dishwasher, domestic, with independent drain 1-1/2" 2.0 2.0 2.0 

Drinking Fountain or Watercooler 1-1/4" 0.5 

Food-waste-grinder, commercial 2" 3.0 

Floor Drain, emergency 0.0 

Kitchen Sink, domestic, with one 1-1/2" trap 1-1/2" 2 2.0 2.0 2.0 

Kitchen Sink, domestic, with food-waste-grinder 1-1/2" 2 2.0 2.0 2.0 

Kitchen Sink, domestic, with dishwasher 1-1/2" 2 3.0 3.0 3.0 

Kitchen Sink, domestic, w/grinder and dishwasher 1-1/2" 2 3.0 3.0 3.0 

Laundry Sink, one or two compartments 1-1/2" 2.0 2.0 2.0 

Laundry Sink, with discharge from clothes washer 1-1/2" 2.0 2.0 2.0 

Lavatory, single 1-1/4" 1.0 1.0 1.0 1.0 

Lavatory in sets of two or three 1-1/2" 2.0 2.0 2.0 2.0 

Mobile Home, trap 3" 12.0 12.0 

Mop Basin, 3" trap 3" 3.0 

Receptor, indirect waste, 1-1/2" trap 1 * 3 1-1/2" (1) 

Receptor, indirect waste, 2" trap 1 - 4 2" (1) 

Receptor, indirect waste, 3" trap 1 3" (1 ) 

Service Sink, 2" trap 2" 3.0 

Service Sink, 3" trap 3" 3.0 

Shower Stall, 2" trap 2" 2.0 2.0 2.0 

Showers, group, per head (continuous use) 2" 5.0 

Sink, commercial, 1-1/2" trap, with food waste 1-1/2" 2 3.0 

Sink, service, flushing rim 3" 6.0 

Sink, general, 1-1/2" trap 1-1/2" 2.0 2.0 2.0 

Sink, general, 2" trap 2" 3.0 3.0 3.0 

Sink, general, 3" trap 3" 5.0 

Urinal, 1.0 GPF 4.0 5.0 

Urinal, greater than 1.0 GPF 5.0 6.0 

Urinal, 1-1/2" trap 1-1/2" 2 4.0 5.0 

Washfountain, 1-1/2" trap 1-1/2" 2.0 

Washfountain, 2" trap 2" 3.0 

Wash Sink, each set of faucets 2.0 

Water Closet, 1.6 GPF Gravity Tank 6 3" 3.0 3.0 4.0 6.0 

Water Closet, 1 .6 GPF Flushometer Tank 6 3" 3.5 3.5 5.0 8.0 

Water Closet, 1.6 GPF Flushometer Valve 6 3" 3.0 3.0 4.0 6.0 

Water Closet, 3.5 GPF Gravity Tank 6 3" 4.0 4.0 6.0 8.0 

Water Closet, 3.5 GPF Flushometer Valve 6 3" 4.0 4.0 6.0 8.0 

Whirlpool Bath or Combination Bath/Shower 2" 3.0 3.0 

1 1ndirect waste receptors shall be sized based on the total drainage capacity of the fixtures that drain therein to, in accordance with 

Table 7-4. 

2 Provide a 2"(51 mm) minimum branch drain beyond the trap arm. 

3 For refrigerators, coffee urns, water stations, and similar low demands. 

4 For commercial sinks, dishwashers, and similar moderate or heavy demands. 

5 Buildings having a clothes washing area with clothes washers in a battery of three (3) or more clothes washers shall be rated at six 

(6) fixture units each for purposes of sizing common horizontal and vertical drainage piping. 

6 Water closets shail be computed as six (6) fixture units when determining septic tank sizes based on Appendix K of this Code. 

7 Trap sizes shall not be increased to the point where the fixture discharge may be inadequate to maintain their self-scouring 

properties. 



60 



SANITARY DRAINAGE 



702.0 - 704.4 



702.0 Fixture Unit Equivalents 

The unit equivalent of plumbing fixtures shown in 
Table 7-3 shall be based on the size of the trap 
required, and the unit equivalent of fixtures and 
devices not shown in Table 7-3 shall be based on the 
rated discharge capacity in gpm (gallons per minute) 
(liters per second) in accordance with Table 7-4. 

Maximum trap loadings for sizes up to four (4) 
inches (102 mm) are as follows: 

1-1/4" (32 mm) - 1 unit 

1-1/2" (38 mm) - 3 units 

2" (51mm) - 4 units 

3" (76mm) - 6 units 

4" (102 mm) - 8 units 

Exception: On self-service laundries. 

703.0 Size of Drainage Piping 

703.1 The minimum sizes of vertical and /or 
horizontal drainage piping shall be determined from 
the total of all fixture units connected thereto, and 
additionally, in the case of vertical drainage pipes, in 
accordance with their length. 

703.2 Table 7-5 shows the maximum number of 
fixture units allowed on any vertical or horizontal 
drainage pipe, building drain or building sewer of a 
given size; the maximum number of fixture units 
allowed on any branch interval of a given size; and 
the maximum length (in feet and meters) of any 
vertical drainage pipe of a given size. 

TABLE 7-4 

Discharge Capacity In Gallons per Minute 
(Liters per Second) 

For Intermittent Flow Only 

GPM (l/sec.) 

Up to 7-1/2 (Up to 0.47) Equals 1 Unit 

8 to 15 (0.50 to 0.95) Equals 2 Units 

16 to 30 (1.00 to 1.89) Equals 4 Units 

31 to 50 (1.95 to 3.15) Equals 6 Units 
Discharge capacity for over 50 gallons per minute 

(3.15 L/sec.) shall be determined by the 
Administrative Authority. 

For a continuous flow into a drainage system, 
such as from a pump, sump ejector, air conditioning 
equipment, or similar device, two (2) fixture units 
shall be allowed for each gallon per minute (0.06 
L/sec.) of flow. 

703-3 For alternate method of sizing drainage 
piping, see Appendix L. 



704.0 Fixture Connections (Drainage) 

704.1 Drainage piping shall be provided with 
approved inlet fittings for fixture connections, 
correctly located according to the size and type of 
fixture proposed to be connected. 

704.2 Two fixtures set back-to-back, or side-by-side, 
within the distance allowed between a trap and its 
vent, may be served by a single vertical drainage 
pipe provided that each fixture wastes separately 
into an approved double fixture fitting having inlet | 
openings at the same level. 

704.3 Pot sinks, scullery sinks, dishwashing sinks, 
silverware sinks, dishwashing machines, silverware- 
washing machines, and other similar fixtures shall be 
connected directly to the drainage system. A floor 
drain shall be provided adjacent to the fixture, and 
the fixture shall be connected on the sewer side of 
the floor drain trap, provided that no other drainage 
line is connected between the floor drain waste 
connection and the fixture drain. The fixture and 
floor drain shall be trapped and vented as required 
by this Code. 

704.4 Closet Rings (Closet Flanges) 

704.4.1 Closet rings (closet flanges) for water 
closets or similar fixtures shall be of an 
approved type and shall be bronze, copper, hard 
lead, cast iron, galvanized malleable iron, ABS, 
PVC, or other approved materials. Each such 
closet ring (closet flange) shall be approximately 
seven (7) inches (178 mm) in diameter and, when 
installed, shall, together with the soil pipe, 
present a one and one-half (1-1/2) inch (38 mm) 
wide flange or face to receive the fixture gasket 

704.4.2 Caulked-on closet rings (closet flanges) 
shall be not less than one-fourth (1/4) inch (6.4 
mm) thick and not less than two (2) inches (51 
mm) in overall depth. 

704.4.3 Closet rings (closet flanges) shall be 
burned or soldered to lead bends or stubs, shall 
be caulked to cast iron soil pipe, shall be solvent 
cemented to ABS and PVC and shall be screwed 
or fastened in an approved manner to other 
materials. 

704.4.4 All such closet rings (closet flanges) 
shall be adequately designed and secured to 
support fixtures connected thereto. 

704.4.5 Closet screws, bolts, washers, and 
similar fasteners shall be of brass, copper, or 
other listed, equally corrosion resistant 
materials. All such screws and bolts shall be of 
adequate size and number to properly support 
the fixture installed. 



61 



Table 7-5 -705.1 



UNIFORM PLUMBING CODE 



TABLE 7-5 

Maximum Unit Loading and Maximum Length of Drainage and Vent Piping 



Size of Pipe, inches 


1-1/4 


1-1/2 


2 


2-1/2 


3 


4 


5 


6 


8 


10 


12 


(mm) 


(32) 


(38) 


(51) 


(64) 


(76) 


(102) 


(127) 


(152) 


(203) 


(254) 


(305) 


Maximum Units 
























Drainage Piping 1 
























Vertical 


1 


22 


163 


323 


48 4 


256 


600 


1380 


3600 


5600 


8400 


Horizontal 


1 


1 


83 


143 


35 4 


2165 


4285 


720 5 


26405 


46805 


82005 


Maximum Length 
























Drainage Piping 
























Vertical, feet 


45 


65 


85 


148 


212 


300 


390 


510 


750 






(m) 


(14) 


(20) 


(26) 


(45) 


(65) 


(91) 


(119) 


(155) 


(228) 






Horizontal (Unlimited) 
























Vent Piping (See note) 






















Horizontal and Vertical 
























Maximum Units 


1 


83 


24 


48 


84 


256 


600 


1380 


3600 






Maximum Lengths, feet 


45 


60 


120 


180 


212 


300 


390 


510 


750 






(m) 


(14) 


(18) 


(37) 


(55) 


(65) 


(91) 


(119) 


(155) 


(228) 







1 Excluding trap arm. 

2 Except sinks, urinals and dishwashers. 

3 Except six-unit traps or water closets. 

4 Only tour (4) water closets or six-unit traps allowed on any vertical pipe or stack; and not to exceed three (3) water 
closets or six-unit traps on any horizontal branch or drain. 

5 Based on one-fourth (1/4) inch per foot (20.9 mm/m) slope. For one-eighth (1/8) inch per foot (10.4 mm/m) slope, multiply 
horizontal fixture units by a factor of 0.8. 

Note: The diameter of an individual vent shall not be less than one and one-fourth (1-1/4) inches (31 .8 mm) nor less than 
one-half (1/2) the diameter of the drain to which it is connected. Fixture unit load values for drainage and vent piping shall 
be computed from Tables 7-3 and 7-4. Not to exceed one-third (1/3) of the total permitted length of any vent may be 
installed in a horizontal position. When vents are increased one (1) pipe size for their entire length, the maximum length 
limitations specified in this table do not apply. 



705.0 Joints and Connections 

705.1 Types of Joints 

705.1.1 Caulked Joints. Caulked joints for cast 
iron bell-and-spigot soil pipe and other similar 
joints shall be firmly packed with oakum or 
hemp and filled with molten lead to a depth of 
not less than one (1) inch (25.4 mm). The lead 
shall be caulked thoroughly at the inside and 
outside edges of the joint. After caulking, the 
finished joint shall not extend more than one- 
eighth (1/8) inch (3.2 mm) below the rim of the 
hub. No paint, varnish, or other coatings shall be 
permitted on the joining material until after the 
joint has been tested and approved. Caulked 
joints in cast iron bell-and-spigot water piping 
shall be made with non-toxic materials. 

705.1.2 Cement Mortar Joints. Except for 
repairs and connections to existing lines 
constructed with such joints, cement mortar 
joints are prohibited on building sewers. 

705.1.3 Burned Lead Joints. Burned (welded) 
lead joints shall be lapped and the lead shall be 
fused together to form a uniform weld at least as 
thick as the lead being joined. 



705.1.4 Asbestos Cement Sewer Pipe Joints. 

Joints in asbestos cement pipe shall be a sleeve 
coupling of the same composition as the pipe or 
of other approved materials, and sealed with 
rubber rings or joined by an approved type 
compression coupling. Joints between asbestos 
cement pipe and other approved pipe shall be 
made by means of an approved adapter coupling. 

705.1.5 Packing Additives Prohibited. The 

addition of leak sealing additives to joint 
packing is prohibited. 

705.1.6 Molded Rubber Coupling Joints. 

When pipe is joined by means of molded rubber 
coupling joints, such joints shall conform to 
approved standards and shall not be considered 
as slip joints. When required, appropriate rubber 
bushings shall be used to allow for any 
difference in piping material diameters. 

705.1.7 Elastomeric Gasketed and Rubber- 
Ring Joints. Elastomeric gasketed and rubber- 
ring joints shall comply with the applicable 
Installation Standard listed in Appendix I. 

705.1.8 Shielded Coupling Joints. When 
piping systems are joined by means of shielded 



62 



SANITARY DRAINAGE 



705.1-707.4 



couplings, such couplings shall conform to 
approved standards and shall not be considered 
as slip joints. 

705.1.9 Hubless Cast Iron Pipe Joints. Joints 
for hubless cast iron soil pipe and fittings shall 
conform to appropriate Installation Standards 
listed in Appendix I and shall not be considered 
as slip joints. 

705.2 Use of Joints 

705.2.1 Clay and Sewer Pipe. Joints in vitrified 
clay pipe or between such pipe and metal pipe 
shall be made as provided in Section 316.1.4, 
705.1.2, 705.1.6, or 705.1.8. 

705.2.2 Cast Iron Pipe. Joints in cast iron pipe 
shall be made as provided in Section 316.1.1, 
316.1.4, 606.1.2, 705.1.1, 705.1.8 or 705.1.9. 

705.2.3 Screw Pipe to Cast Iron. Joints 
between wrought iron, steel, brass or copper 
pipe, and cast iron pipe shall be either caulked 
or threaded joints made as provided in Section 
316.1.1 or 705.1.1, or shall be made with 
approved adapter fittings. 

705.2.4 Lead to Cast Iron, Wrought Iron or 
Steel. Joints between lead and cast iron, 
wrought iron or steel pipe shall be made by 
means of wiped joints to a caulking ferrule, 
soldering nipple or bushing as provided in 
Section 316.1.2. 

705.3 Special Joints 

705.3.1 Slip Joints. In fixture drains and traps, 
slip joints of approved materials may be used in 
accordance with their approvals. 

705.3.2 Expansion Joints. Expansion joints 
shall be accessible, except when in vent piping 
or drainage stacks, and may be used where 
necessary to provide for expansion and 
contraction of the pipes. 

705.3.3 Ground Joint, Flared or Ferrule 
Connections. Brass or copper ground joint, 
flared or ferrule type connections which allow 
adjustment of tubing, but provide a rigid joint 
when made up, shall not be considered as slip 
joints. 

706.0 Changes in Direction of Drainage Flow 

706.1 Changes in direction of drainage piping shall 
be made by the appropriate use of approved fittings 
and shall be of the angles presented by a one- 
sixteenth (1/16) bend, one-eighth (1/8) bend, or one- 
sixth (1/6) bend, or other approved fittings of 
equivalent sweep. 

706.2 Horizontal drainage lines, connecting with a 
vertical stack, shall enter through forty-five (45) 



degree (0.79 rad) wye branches, sixty (60) degree 
(1.05 rad) wye branches, combination wye and 1/8 
bend branches, sanitary tee or sanitary tapped tee 
branches, or other approved fittings of equivalent 
sweep. No fitting having more than one (1) inlet at 
the same level shall be used unless such fitting is 
constructed so that the discharge from one (1) inlet 
cannot readily enter any other inlet. Double sanitary 
tees may be used when the barrel of the fitting is at 
least two (2) pipe sizes larger than the largest inlet, 
(pipe sizes recognized for this purpose are 2", 2-1/2", 
3", 3-1/2", 4", 4-1 IT, 5", 6", etc.) (51, 64, 76, 89, 102, 
114, 127, 152 mm, etc.). 

706.3 Horizontal drainage lines connecting with 
other horizontal drainage lines shall enter through 
forty-five (45) degree (0.79 rad) wye branches, 
combination wye and one-eighth (1/8) bend branches, 
or other approved fittings of equivalent sweep. 

706.4 Vertical drainage lines connecting with 
horizontal drainage lines shall enter through forty- 
five (45) degree (0.79 rad) wye branches, combination 
wye and one-eighth (1/8) bend branches, or other 
approved fittings of equivalent sweep. Sixty (60) 
degree (1.05 rad) branches or offsets may be used 
only when installed in a true vertical position. 

707.0 Cleanouts 

707.1 Each cleanout fitting for cast iron pipe shall 
consist of a cast iron or brass body, and an approved 
plug. Each cleanout for galvanized wrought iron, 
galvanized steel, copper, or brass pipe shall consist 
of a brass plug as specified in Table 7-6, or a 
standard weight brass cap, or an approved ABS or 
PVC plastic plug. Plugs shall have raised square 
heads or approved counter-sunk rectangular slots. 

707.2 Each cleanout fitting and each cleanout plug 
or cap shall be of an approved type. Materials used 
for cleanouts shall conform to approved standards 
acceptable to the Administrative Authority. 

707.3 Cleanouts shall be designed to be gas and 
watertight without the use of any gasket, packing, or 
washer. 

707.4 Each horizontal drainage pipe shall be 
provided with a cleanout at its upper terminal and 
each run of piping, which is more than one hundred 
(100) feet (30480 mm) in total developed length, shall 
be provided with a cleanout for each one hundred 
(100) feet (30480 mm), or fraction thereof, in length of 
such piping. 

Exceptions: 

(1) Cleanouts may be omitted on a horizontal 
drain line less than five (5) feet (1524 mm) in 
length unless such line is serving sinks or 
urinals. 



63 



707.4-710.1 



UNIFORM PLUMBING CODE 



(2) Cleanouts may be omitted on any horizontal 
drainage pipe installed on a slope of seventy- 
two (72) degrees (1.26 rad) or less from the 
vertical angle (angle of one- fifth (1 /5) bend). 

(3) Excepting the building drain and its 
horizontal branches, a cleanout shall not be 
required on any pipe or piping which is above 
the first floor of the building. 

(4) An approved type of two-way cleanout 
fitting, installed inside the building wall near the 
connection between the building drain and 
building sewer or installed outside of a building 
at the lower end of a building drain and 
extended to grade, may be substituted for an 
upper terminal cleanout. 

707.5 An additional cleanout shall be provided in a 
drainage line for each aggregate horizontal change of 
direction exceeding one hundred and thirty-five 
(135) degrees (2.36 rad). 

707.6 Each cleanout shall be installed so that it opens 
to allow cleaning in the direction of flow of the soil or 
waste or at right angles thereto and, except in the case 
of wye branch and end-of-line cleanouts, shall be 
installed vertically above the flow line of the pipe. 

707.7 Each cleanout extension shall be considered as 
drainage piping and each ninety (90) degree (1.6 rad) 
cleanout extension shall be extended from a wye type 
fitting or other approved fitting of equivalent sweep. 

707.8 Each cleanout for an interceptor shall be 
outside of such interceptor. 

707.9 Each cleanout, unless installed under an 
approved cover plate, shall be above grade, readily 
accessible, and so located as to serve the purpose for 
which it is intended. Cleanouts located under cover 
plates shall be so installed as to provide the 
clearances and accessibility required by this section. 

707.10 Each cleanout in piping two (2) inches (51 
mm) or less in size shall be so installed that there is a 
clearance of not less than twelve (12) inches (305 mm) 
in front of the cleanout. Cleanouts in piping larger 
than two (2) inches (51 mm) shall have a clearance of 
not less than eighteen (18) inches (457 mm) in front of 
the cleanout. Cleanouts in underfloor piping shall be 
extended to or above the finished floor or shall be 
extended outside the building when there is less than 
eighteen (18) inches (457 mm) vertical and thirty (30) 
inches (762 mm) horizontal clearance from the means 
of access to such cleanout. No underfloor cleanout 
shall be located more than twenty (20) feet (6096 mm) 
from an access door, trap door or crawl hole. 

707.1 1 Cleanout fittings shall be not less in size than 
those given in Table 7-6. 

707.12 Cleanouts shall be provided for pressure 
drainage systems as classified under Section 710.7. 



707.13 Countersunk cleanout plugs shall be 
installed where raised heads may cause a hazard. 

707.14 When a hubless blind plug is used for a 
required cleanout, the complete coupling and plug 
shall be accessible for removal or replacement. 

TABLE 7-6 

Cleanouts 



Size of Pipe 
(inches) 


Size of Cleanout 
(inches) 


Threads 
per inch 


1-1/2 

2 

2-1/2 

3 

4 & larger 


1-1/2 
1-1/2 
2-1/2 
2-1/2 
3-1/2 


11-1/2 
11-1/2 

8 

8 

8 



TABLE 7-6 

Cleanouts (Metric) 



Size of Pipe 


Size of Cleanout 


Threads 


(mm) 


(mm) 


per 25.4 mm 


38 


38 


11-1/2 


51 


38 


11-1/2 


64 


64 


8 


76 


64 


8 


102 & larger 


89 


8 



708.0 Grade of Horizontal Drainage Piping 

Horizontal drainage piping shall be run in practical 
alignment and a uniform slope of not less than one- 
fourth (1/4) of an inch per foot (20.9 mm/m) or two 
(2) percent toward the point of disposal provided 
that, where it is impractical due to the depth of the 
street sewer or to the structural features or to the 
arrangement of any building or structure to obtain a 
slope of one-fourth (1/4) of an inch per foot (20.9 
mm/m) or two (2) percent, any such pipe or piping 
four (4) inches (102 mm) or larger in diameter may 
have a slope of not less than one-eighth (1/8) of an 
inch per foot (10.5 mm/m) or one (1) percent when 
first approved by the Administrative Authority. 

709.0 Gravity Drainage Required 

Wherever practicable, all plumbing fixtures shall be 
drained to the public sewer or private sewage 
disposal system by gravity. 

710.0 Drainage of Fixtures Located Below the 
Next Upstream Manhole or Below the Main Sewer 
Level 

710.1 Drainage piping serving fixtures which have 
flood level rims located below the elevation of the 
next upstream manhole cover of the public or private 
sewer serving such drainage piping shall be protected 



64 



SANITARY DRAINAGE 



710.1 -710.10 



from backflow of sewage by installing an approved 
type backwater valve. Fixtures above such elevation 
shall not discharge through the backwater valve. 

710.2 Drainage piping serving fixtures that are 
located below the crown level of the main sewer 
shall discharge into an approved watertight sump or 
receiving tank, so located as to receive the sewage or 
wastes by gravity. From such sump or receiving 
tank, the sewage or other liquid wastes shall be lifted 
and discharged into the building drain or building 
sewer by approved ejectors, pumps, or other equally 
efficient approved mechanical device. 

710.3 A sewage ejector or sewage pump receiving 
the discharge of water closets or urinals: 

710.3.1 Shall have a minimum discharge 
capacity of twenty (20) gallons (75.7 liters) per 
minute. 

710.3.2 In single dwelling units, the ejector or 
pump shall be capable of passing a one and one- 
half (1-1/2) inch (38 mm) diameter solid ball, 
and the discharge piping of each ejector or 
pump shall have a backwater valve and gate 
valve, and be a minimum of two (2) inches (51 
mm) in diameter. 

710.3.3 In other than single dwelling units, the 
ejector or pump shall be capable of passing a 
two (2) inches (51 mm) diameter solid ball, and 
the discharge piping of each ejector or pump 
shall have a backwater valve and gate valve, and 
be a minimum of three (3) inches (76 mm) in 
diameter. 

710.4 The discharge line from such ejector, pump, 
or other mechanical device shall be provided with an 
accessible backwater or swing check valve and gate 
valve. If the gravity drainage line to which such 
discharge line connects is horizontal, the method of 
connection shall be from the top through a wye 
branch fitting. The gate valve shall be located on the 
discharge side of the backwater or check valve. 

Gate valves, when used on drainage work, shall 
be full way type with working parts of corrosion 
resistant metal. Sizes four (4) inches (102 mm) or 
more in diameter shall have cast iron bodies, and 
sizes less than four (4) inches (102 mm), cast iron or 
brass bodies. 

71 0.5 Building drains or building sewers receiving 
discharge from any pump or ejector shall be 
adequately sized to prevent overloading. Two (2) 
fixture units shall be allowed for each gallon per 
minute (0.06 L/s) of flow. 

710.6 Backwater valves, gate valves, unions, 
motors, compressors, air tanks, and other mechanical 
devices required by this section shall be located 
where they will be accessible for inspection and 



repair at all times and, unless continuously exposed, 
shall be enclosed in a masonry pit fitted with an 
adequately sized removable cover. 

Backwater valves shall have bodies of cast iron, 
brass, or other approved materials, non-corrosive 
bearings, seats and self-aligning discs, and shall be 
so constructed as to insure a positive mechanical seal 
and to remain closed, except when discharging 
wastes. Such valves shall remain sufficiently open 
during periods of low flows to avoid screening of 
solids and shall not restrict capacities or cause 
excessive turbulence during peak loads. Unless 
otherwise listed, valve access covers shall be bolted 
type with gasket and each valve shall bear the 
manufacturer's name cast into body and cover. 

710.7 The drainage and venting systems in 
connection with fixtures, sumps, receiving tanks, and 
mechanical waste lifting devices, shall be installed 
under the same requirements as provided for in this 
Code for gravity systems. 

710.8 Sumps and receiving tanks shall be watertight 
and shall be constructed of concrete, metal, or other 
approved materials. If constructed of poured 
concrete, the walls and bottom shall be adequately 
reinforced and designed to recognized acceptable 
standards. Metal sumps or tanks shall be of such 
thickness as to serve their intended purpose and 
shall be treated internally and externally to resist 
corrosion. 

710.9 All such sumps and receiving tanks shall be 
automatically discharged and, when in any "public 
use" occupancy, shall be provided with dual pumps 
or ejectors arranged to function independently in 
case of overload or mechanical failure. The lowest 
inlet shall have a minimum clearance of two (2) 
inches (51 mm) from the high water or "starting" 
level of the sump. 

71 0.1 Sumps and receiving tanks shall be provided 
with substantial covers having a bolt and gasket type 
manhole or equivalent opening to permit access for 
inspection, repairs, and cleaning. The top shall be 
provided with a vent pipe which shall extend 
separately through the roof, or when permitted, may 
be combined with other vent pipes. Such vent shall 
be large enough to maintain atmospheric pressure 
within the sump under all normal operating 
conditions and, in no case, shall be less in size than 
that required by Table 7-5 for the number and type 
of fixtures discharging into the sump, nor less than 
one and one-half (1-1/2) inches (38 mm) in diameter. 
When the foregoing requirements are met and the 
vent, after leaving the sump, is combined with vents 
from fixtures discharging into the sump, the size of 
the combined vent need not exceed that required for 
the total number of fixtures discharging into the 



65 



710.10-713.6 



UNIFORM PLUMBING CODE 



sump. No vent from an air-operating sewage ejector 
shall combine with other vents. 

71 0.1 1 Air tanks shall be so proportioned as to be of 
equal cubical capacity to the ejectors connected 
therewith in which there shall be maintained an air 
pressure of not less than two (2) pounds for each foot 
(3 kg for each m) of height the sewage is to be raised. 
No water operated ejectors shall be permitted. 

710.12 When subsoil drainage systems are installed, 
they shall be discharged into an approved sump or 
receiving tank and shall be discharged in a manner 
satisfactory to the Administrative Authority. 

710.13 Grinder Pump Ejector. With the approval 
of the Administrative Authority, a grinder pump 
may be used. 

711.0 Suds Relief 

Drainage connections shall not be made into a 
drainage piping system within eight (8) feet (2438 
mm) of any vertical to horizontal change of direction 
of a stack containing suds-producing fixtures. 
Bathtubs, laundries, washing machine stand pipes, 
kitchen sinks and dishwashers shall be considered 
suds-producing fixtures. Where parallel vent stacks 
are required, they shall connect to the drainage stack 
at a point eight (8) feet (2438 mm) above the lowest 
point of the drainage stack. 

Exceptions: 

(1) Single family residences. 

(2) Stacks receiving the discharge from less than 
three (3) stories of plumbing fixtures. 

712.0 Testing 

712.1 Media. The piping of the plumbing, drainage, 
and venting systems shall be tested with water or air. 
The Administrative Authority may require the 
removal of any cleanouts, etc., to ascertain if the 
pressure has reached all parts of the system. After 
the plumbing fixtures have been set and their traps 
filled with water, they shall be submitted to a final 
test. 

712.2 Water Test. The water test shall be applied to 
the drainage and vent systems either in its entirety or 
in sections. If applied to the entire system, all 
openings in the piping shall be tightly closed, except 
the highest opening, and the system filled with water 
to point of overflow. If the system is tested in 
sections, each opening shall be tightly plugged 
except the highest opening of the section under test, 
and each section shall be filled with water, but no 
section shall be tested with less than a ten (10) foot 
(3048 mm) head of water. In testing successive 
sections, at least the upper ten (10) feet (3048 mm) of 



the next preceding section shall be tested, so that no 
joint or pipe in the building (except the uppermost 
ten (10) feet (3048 mm) of the system) shall have 
been submitted to a test of less than a ten (10) foot 
(3048 mm) head of water. The water shall be kept in 
the system, or in the portion under test, for at least 
fifteen (15) minutes before inspection starts. The 
system shall then be tight at all points. 

712.3 Air Test. The air test shall be made by 
attaching an air compressor testing apparatus to any 
suitable opening, and, after closing all other inlets 
and outlets to the system, forcing air into the system 
until there is a uniform gage pressure of five (5) 
pounds per square inch (34.5 kPa) or sufficient to 
balance a column of mercury ten (10) inches (254 
mm) in height. The pressure shall be held without 
introduction of additional air for a period of at least 
fifteen (15) minutes. 

PART II - BUILDING SEWERS 

713.0 Sewer Required 

713.1 Every building in which plumbing fixtures 
are installed and every premises having drainage 
piping thereon, shall have a connection to a public or 
private sewer, except as provided in Sections 
101.4.1.3, 713.2 and 713.4. 

713.2 When no public sewer, intended to serve any 
lot or premises, is available in any thoroughfare or 
right of way abutting such lot or premises, drainage 
piping from any building or works shall be connected 
to an approved private sewage disposal system. 

713.3 Within the limits prescribed by Section 713.4 
hereof, the rearrangement or subdivision into smaller 
parcels of a lot which abuts and is served by a public 
sewer shall not be deemed cause to permit the 
construction of a private sewage disposal system, and 
all plumbing or drainage systems on any such smaller 
parcel or parcels shall connect to the public sewer. 

713.4 The public sewer may be considered as not 
being available when such public sewer or any 
building or any exterior drainage facility connected 
thereto, is located more than two hundred (200) feet 
(60.8 m) from any proposed building or exterior 
drainage facility on any lot or premises which abuts 
and is served by such public sewer. 

713.5 No permit shall be issued for the installation, 
alteration, or repair of any private sewage disposal 
system, or part thereof, on any lot for which a 
connection with a public sewer is available. 

713.6 On every lot or premises hereafter connected 
to public sewer, all plumbing and drainage systems 
or parts thereof, on such lot or premises shall be 
connected with such public sewer. 



66 



SANITARY DRAINAGE 



713.6-718.3 



Exception: Single family dwellings and 
buildings or structures accessory thereto, 
existing and connected to an approved private 
sewage disposal system prior to the time of 
connecting the premises to public sewer may, 
when no hazard, nuisance, or insanitary 
condition is evidenced and written permission 
has been obtained from the Administrative 
Authority, remain connected to such properly 
maintained private sewage disposal system 
when there is insufficient grade or fall to permit 
drainage to the sewer by gravity. 

714.0 Damage to Public Sewer or Private Sewage 
Disposal System 

714.1 It shall be unlawful for any person to deposit, 
by any means whatsoever, into any plumbing 
fixture, floor drain, interceptor, sump, receptacle, or 
device which is connected to any drainage system, 
public sewer, private sewer, septic tank, or cesspool, 
any ashes, cinders, solids, rags, flammable, 
poisonous, or explosive liquids or gases, oils, grease, 
and any other thing whatsoever which would or 
could cause damage to the public sewer, private 
sewer, or private sewage disposal system. 

714.2 No rain, surface, or subsurface water shall be 
connected to or discharged into any drainage system, 
unless first approved by the Adrninistrative Authority. 

714.3 No cesspool, septic tank, seepage pit, or 
drainfield shall be connected to any public sewer or 
to any building sewer leading to such public sewer. 

714.4 No commercial food waste grinder shall be 
connected to a private sewage disposal system 
unless permission has first been obtained from the 
Administrative Authority. 

714.5 An approved type watertight sewage or waste 
water holding tank, the contents of which, due to 
their character, must be periodically removed and 
disposed of at some approved off-site location, shall 
be installed only when required by the 
Administrative Authority or the Health Officer to 
prevent anticipated surface or subsurface 
contamination or pollution, damage to the public 
sewer, or other hazardous or nuisance condition. 

715.0 Building Sewer Materials 

715.1 The building sewer, beginning two (2) feet 
(610 mm) from any building or structure, shall be of 
such materials as may be approved by the 
Administrative Authority under the approval 
procedures set forth in Chapter 3 of this Code. 

715.2 Joining methods and materials shall be as 
prescribed in this Code. 



716.0 Markings 

All pipe, brick, block, prefabricated septic tanks, 
prefabricated septic tank or seepage pit covers or 
other parts or appurtenances incidental to the 
installation of building sewers or private sewage 
disposal systems, shall conform to the approval 
requirements of Chapter 3 of this Code and shall be 
marked and identified in a manner satisfactory to the 
Administrative Authority. 

717.0 Size of Building Sewers 

The minimum size of any building sewer shall be 
determined on the basis of the total number of 
fixture units drained by such sewer, in accordance 
with Table 7-8. No building sewer shall be smaller 
than the building drain. 

For alternate methods of sizing building sewers, 
see Appendix L. 

718.0 Grade, Support, and Protection of Building 
Sewers 

718.1 Building sewers shall be run in practical 
alignment and at a uniform slope of not less than 
one-fourth (1/4) of an inch per foot (20.9 mm/m) 
toward the point of disposal. 

Exception: When approved by the 
Administrative Authority and where it is 
impractical, due to the depth of the street sewer 
or to the structural features or to the arrangement 
of any building or structure, to obtain a slope of 
one-fourth (1/4) of an inch per foot (20.9 mm/ 
m), any such pipe or piping four (4) inches (102 
mm) through six (6) inches (152 mm) may have a 
slope of not less than one-eighth (1/8) of an inch 
per foot (10.5 mm/m) and any such piping eight 
(8) inches (203 mm) and larger may have a slope 
of not less than one-sixteenth (1/16) of an inch 
per foot (5.3 mm/m). 

718.2 Building sewer piping shall be laid on a firm 
bed throughout its entire length, and any such 
piping laid in made or filled-in ground shall be laid 
on a bed of approved materials and shall be 
adequately supported to the satisfaction of the 
Administrative Authority. 

718.3 No building sewer or other drainage piping 
or part thereof, which is constructed of materials 
other than those approved for use under or within a 
building, shall be installed under or within two (2) 
feet (610 mm) of any building or structure, or part 
thereof, nor less than one (1) foot (305 mm) below the 
surface of the ground. The provisions of this 
subsection include structures such as porches and 
steps, whether covered or uncovered, breezeways, 



67 



718.3-721.2 



UNIFORM PLUMBING CODE 



roofed porte-cocheres, roofed patios, carports, 
covered walks, covered driveways, and similar 
structures or appurtenances. 

719.0 Cleanouts 

71 9.1 Cleanouts shall be placed inside the building 
near the connection between the building drain and 
the building sewer or installed outside the building 
at the lower end of the building drain and extended 
to grade. 

Additional building sewer cleanouts shall be 
installed at intervals not to exceed one hundred (100) 
feet (30480 mm) in straight runs and for each 
aggregate horizontal change in direction exceeding 
one hundred thirty-five (135) degrees (2.36 rad). 

71 9.2 When a building sewer or a branch thereof does 
not exceed ten (10) feet (3048 mm) in length and is a 
straight line projection from a building drain which is 
provided with a cleanout, no cleanout will be required 
at its point of connection to the building drain. 

719.3 All required building sewer cleanouts shall be 
extended to grade. When building sewers are located 
under buildings, the cleanout requirements of 
Section 707.0 shall apply. 

719.4 Each cleanout shall be installed so that it opens 
to allow cleaning in the direction of flow of the soil or 
waste or at right angles thereto, and except in the case 
of wye branch and end-of-line cleanouts, shall be 
installed vertically above the flow line of the pipe. 

719.5 Cleanouts installed under concrete or asphalt 
paving shall be made accessible by yard boxes, or 
extending flush with paving with approved 
materials and be adequately protected. 

719.6 Approved manholes may be installed in lieu 
of cleanouts when first approved by the 
Administrative Authority. The maximum distance 
between manholes shall not exceed three hundred 
(300) feet (91.4 m). 

The inlet and outlet connections shall be made by 
the use of a flexible compression joint no closer than 
twelve (12) inches (305 mm) to, and not farther than 
three (3) feet (914 mm) from the manhole. No flexible 
compression joints shall be embedded in the 
manhole base. 

720.0 Sewer and Water Pipes 

Building sewers or drainage piping of clay or materi- 
als which are not approved for use within a building 
shall not be run or laid in the same trench as the 
water pipes unless both of the following 
requirements are met: 

(1) The bottom of the water pipe, at all points, 



shall be at least twelve (12) inches (305 mm) 
above the top of the sewer or drain line. 
(2) The water pipe shall be placed on a solid 
shelf excavated at one side of the common 
trench with a minimum clear horizontal distance 
of at least twelve (12) inches (305 mm) from the 
sewer or drain line. 

Water pipes crossing sewer or drainage piping 
constructed of clay or materials which are not 
approved for use within a building shall be laid a 
minimum of twelve (12) inches (305 mm) above that 
sewer or drain pipe. 

Note: For the purpose of this section, " within the 
building" shall mean within the fixed limits of 
the building foundation. 

721.0 Location 

721.1 Except as provided in Section 721.2, no 
building sewer shall be located in any lot other than 
the lot which is the site of the building or structure 
served by such sewer; nor shall any building sewer 
be located at any point having less than the 
minimum distances indicated in Table 7-7. 

721.2 Nothing contained in this Code shall be 
construed to prohibit the use of all or part of an 
abutting lot to: 

(1) Provide access to connect a building sewer 
to an available public sewer, when proper cause 
and legal easement not in violation of other 
requirements has been first established to the 
satisfaction of the Administrative Authority. 

(2) Provide additional space for a building 
sewer when proper cause, transfer of ownership, 
or change of boundary not in violation of other 
requirements has been first established to the 
satisfaction of the Administrative Authority. The 
instrument recording such action shall constitute 
an agreement with the Administrative Authority 
which shall clearly state and show that the areas 
so joined or used shall be maintained as a unit 
during the time they are so used. Such an 
agreement shall be recorded in the office of the 
County Recorder as part of the conditions of 
ownership of said properties, and shall be 
binding on all heirs, successors, and assigns to 
such properties. A copy of the instrument 
recording such proceedings shall be filed with 
the Administrative Authority. 

722.0 Abandoned Sewers and Sewage Disposal 
Facilities 

722.1 Every abandoned building (house) sewer, or 
part thereof, shall be plugged or capped in an 



68 



SANITARY DRAINAGE 



722.2 - 723.0 



approved manner within five (5) feet (1524 mm) of 
the property line. 

722.2 Every cesspool, septic tank, and seepage pit 
which has been abandoned or has been discontinued 
otherwise from further use or to which no waste or 
soil pipe from a plumbing fixture is connected, shall 
have the sewage removed therefrom and be 
completely filled with earth, sand, gravel, concrete, 
or other approved material. 

722.3 The top cover or arch over the cesspool, septic 
tank, or seepage pit shall be removed before filling 
and the filling shall not extend above the top of the 
vertical portions of the sidewalls or above the level 
of any outlet pipe until inspection has been called 
and the cesspool, septic tank, or seepage pit has been 
inspected. After such inspection, the cesspool, septic 
tank, or seepage pit shall be filled to the level of the 
top of the ground. 

722.4 No person owning or controlling any 
cesspool, septic tank, or seepage pit on the premises 
of such person or in that portion of any public street, 
alley, or other public property abutting such 



premises, shall fail, refuse, or neglect to comply with 
the provisions of this section or upon receipt of 
notice so to comply from the Administrative 
Authority. 

722.5 Where disposal facilities are abandoned 
consequent to connecting any premises with the 
public sewer, the permittee making the connection 
shall fill all abandoned facilities as required by the 
Administrative Authority within thirty (30) days 
from the time of connecting to the public sewer. 

723.0 Building Sewer Test 

Building sewers shall be tested by plugging the end 
of the building sewer at its points of connection with 
the public sewer or private sewage disposal system 
and completely filling the building sewer with water 
from the lowest to the highest point thereof, or by 
approved equivalent low pressure air test, or by such 
other test as may be prescribed by the 
Administrative Authority. The building sewer shall 
be watertight at all points. 



TABLE 7-7 

Minimum Horizontal Distance Required From Building Sewer 

Buildings or structures' 2 feet (610 mm) 

Property line adjoining private 

property Clear 2 

Water supply wells 50 feet 3 (15240 mm) 

Streams 50 feet (15240 mm) 

On-site domestic water 

service line 1 foot 4 (305 mm) 

Public water main 10 feet 5 - 6 (3048 mm) 

Note: 

1 . Including porches and steps, whether covered or uncovered, breezeways, roofed porte-cocheres, roofed 
patios, carports, covered walks, covered driveways, and similar structures or appurtenances. 

2. See also Section 313.3. 

3. All drainage piping shall clear domestic water supply wells by at least fifty (50) feet (15240 mm). This 
distance may be reduced to not less than twenty-five (25) feet (7620 mm) when the drainage piping is 
constructed of materials approved for use within a building. 

4. See Section 720.0. 

5. For parallel construction. 

6. For crossings, approval by the Health Department or Administrative Authority is required. 



TABLE 7-8 

Maximum/Minimum Fixture Unit Loading On Building Sewer Piping 



Size of Pipe, 
Inches (mm) 

6 and smaller (152) 
8 (203) 

10 (254) 

12 (305) 



Slope, Inches per Foot (mm/m) 
1/16(5.3) 1/8(10.5) 1/4(20.9) 

(As specified in Table 7-5/No minimum loading) 
1 ,950/1 ,500 2,800/625 3,900/275 

3,400/1,600 4,900/675 6,800/300 

5,600/1,700 8,000/725 11,200/325 



See also Appendix K, Private Sewage Disposal Systems. For alternate methods of sizing drainage piping, see 
Appendix L 

69 



UNIFORM PLUMBING CODE 



~> 



70 



CHAPTER 8 

INDIRECT WASTES 



801.0 Indirect Wastes 

801.1 Airgap or Airbreak Required. All indirect 
waste piping shall discharge into the building 
drainage system through an airgap or airbreak as set 
forth in this Code. Where a drainage airgap is 
required by this Code, the minimum vertical 
distance as measured from the lowest point of the 
indirect waste pipe or the fixture outlet to the flood 
level rim of the receptor shall be not less than one (1) 
inch (25.4 mm). 

801.2 Food and Beverage Handling Establish- 
ments. Establishments engaged in the storage, 
preparation, selling, serving, processing, or other 
handling of food and beverage involving the 
following equipment which requires drainage shall 
provide indirect waste piping for refrigerators, 
refrigeration coils, freezers, walk-in coolers, iceboxes, 
ice-making machines, steam tables, egg boilers, 
coffee urns and brewers, hot and cold drink 
dispensers, and similar equipment. 

801.2.1 Except for refrigeration coils and ice- 
making machines, the minimum size of the 
indirect waste pipe shall not be smaller than the 
drain on the unit, but shall not be smaller than 
one (1) inch (25.4 mm), and the maximum 
developed length shall not exceed fifteen (15) 
feet (4572 mm). Indirect waste pipe for ice- 
making machines shall not be less than the drain 
on the unit, but shall not be less than three- 
quarters (3/4) inch (19.1 mm). 

801.2.2 For walk-in coolers, floor drains may be 
connected to a separate drainage line 
discharging into an outside receptor. The flood 
level rim of the receptor shall be a minimum of 
six (6) inches (152 mm) lower than the lowest 
floor drain. Such floor drains shall be trapped 
and individually vented. Cleanouts shall be 
provided at every ninety (90) degree (1.6 rad) 
turn and shall be accessibly located. Such waste 
shall discharge through an airgap or airbreak 
into a trapped and vented receptor, except that a 
full-size airgap is required where the indirect 
waste pipe may be under vacuum. 

801.2.3 Food preparation sinks, steam kettles, 
potato peelers, ice cream dipper wells, and 
similar equipment shall be indirectly connected 
to the drainage system by means of an airgap or 
airbreak. The piping from the equipment to the 
receptor shall not be smaller than the drain on 
the unit, but it shall not be smaller than one (1) 
inch (25.4 mm). 



801.3 Bar and Fountain Sink Traps. Where the 
sink in a bar, soda fountain, or counter is so located 
that the trap serving the sink cannot be vented, the 
sink drain shall discharge through an airgap or 
airbreak (see Section 801.2.3) into an approved 
receptor which is vented. The developed length from 
the fixture outlet to the receptor shall not exceed five 
(5) feet (1524 mm). 

801.4 Connections from Water Distribution 
System. Indirect waste connections shall be 
provided for drains, overflows, or relief pipes from 
the water distribution system by means of an airgap. 

801.5 Sterilizers. Lines, devices, or apparatus such 
as stills, sterilizers, and similar equipment requiring 
waste connections and used for sterile materials shall 
be indirectly connected by means of an airgap. Each 
such indirect waste pipe shall be separately piped to 
the receptor and shall not exceed fifteen (15) feet 
(4572 mm). Such receptors shall be located in the 
same room. 

801.6 Drip or Drainage Outlets. Appliances, 
devices, or apparatus not regularly classed as 
plumbing fixtures, but which have drip or drainage 
outlets, may be drained by indirect waste pipes 
discharging into an open receptor through either an 
airgap or airbreak (see Section 801.2.1). 

801.7 Potable Water Pressure Tanks, Water 
Treatment Devices, Boilers, and Relief Valves. The 

drains to the drainage system from potable water 
pressure tanks, water treatment devices, boilers, and I 
relief valves and similar equipment shall discharge 
indirectly by means of an airgap into a receptor. 

802.0 Approvals 

No plumbing fixtures served by indirect waste pipes 
or receiving discharge therefrom shall be installed 
until first approved by the Administrative Authority. 

803.0 Indirect Waste Piping 

Except as hereinafter provided, the size and 
construction of indirect waste piping shall be in 
accordance with other sections of this Code 
applicable to drainage and vent piping. No vent 
from indirect waste piping shall combine with any 
sewer connected vent, but shall extend separately to 
the outside air. Indirect waste pipes exceeding five 
(5) feet (1524 mm), but less than fifteen (15) feet (4572 
mm) in length shall be directly trapped, but such 
traps need not be vented. 



71 



803.0 - 809.0 



UNIFORM PLUMBING CODE 



Indirect waste pipes less than fifteen (15) feet 
(4572 mm) in length shall not be less than the 
diameter of the drain outlet or tailpiece of the fixture, 
appliance, or equipment served, and in no case less 
than one-half (1/2) inch (12.7 mm) in size. Angles 
and changes of direction in such indirect waste pipes 
shall be provided with cleanouts so as to permit 
flushing and cleaning. 

804.0 Indirect Waste Receptors 

804.1 All plumbing fixtures or other receptors 
receiving the discharge of indirect waste pipes shall 
be approved for the use proposed and shall be of 
such shape and capacity as to prevent splashing or 
flooding and shall be located where they are readily 
accessible for inspection and cleaning. No standpipe 
receptor for any clotheswasher shall extend more 
than thirty (30) inches (762 mm), nor less than 
eighteen (18) inches (457 mm) above its trap. No trap 
for any clotheswasher standpipe receptor shall be 
installed below the floor, but shall be roughed in not 
less than six (6) inches (152 mm) and not more than 
eighteen (18) inches (457 mm) above the floor. No 
indirect waste receptor shall be installed in any toilet 
room, closet, cupboard, or storeroom, nor in any 
other portion of a building not in general use by the 
occupants thereof; except standpipes for 
clotheswashers may be installed in toilet and 
bathroom areas when the clotheswasher is installed 
in the same room. 

804.2 Where water service connections are installed 
for a clotheswasher, an approved method of waste 
disposal shall be provided. 

805.0 Pressure Drainage Connections 

Indirect waste connections shall be provided for 
drains, overflows or relief vents from the water 
supply system, and no piping or equipment carrying 
wastes or producing wastes or other discharges 
under pressure shall be directly connected to any 
part of the drainage system. 

The foregoing shall not apply to any approved 
sump pump or to any approved pressure-wasting 
plumbing fixture or device when the Administrative 
Authority has been satisfied that the drainage system 
is adequately sized to accommodate the anticipated 
discharge thereof. 

806.0 Sterile Equipment 

Appliances, devices, or apparatus such as stills, 
sterilizers, and similar equipment requiring water 
and waste and used for sterile materials shall be 
drained through an airgap. 



807.0 Appliances 

807.1 Appliances, devices, equipment, or other 
apparatus not regularly classed as plumbing fixtures 
which are equipped with pumps, drips, or drainage 
outlets may be drained by indirect waste pipes 
discharging into an approved type open receptor. 

807.2 When the condensate waste from air 
conditioning coils discharges by direct connection to 
a lavatory tailpiece or to an approved accessible inlet 
on a bathtub overflow, the connection shall be 
located in the area controlled by the same person 
controlling the air-conditioned space. 

807.3 When undiluted condensate waste from a fuel 
burning condensing appliance is discharged into the 
drainage system, the material in the drainage system 
shall be cast iron, galvanized iron, plastic, or other 
materials approved for this use. 

Exceptions: 

(1) When the above condensate is discharged to 
an exposed fixture tailpiece and trap, such 
tailpiece and trap may be brass. 

(2) Any materials approved in Section 701.0 
may be used when, in the opinion of the 
Administrative Authority, condensate waste 
from a fuel burning condensing appliance is 
diluted either before or after discharge into the 
drainage system. 

807.4 No domestic dishwashing machine shall be 
directly connected to a drainage system or food 
waste disposer without the use of an approved 
dishwasher airgap fitting on the discharge side of the 
dishwashing machine. Listed airgaps shall be 
installed with the flood level (FL) marking at or 
above the flood level of the sink or drainboard, 
whichever is higher. 

808.0 Cooling Water 

When permitted by the Administrative Authority, 
clean running water used exclusively as a cooling 
medium in an appliance, device or apparatus, may 
discharge into the drainage system through the inlet 
side of a fixture trap in the event that a suitable 
fixture is not available to receive such discharge. 
Such trap connection shall be by means of a pipe 
connected to the inlet side of an approved fixture 
trap, the upper end terminating in a funnel shaped 
receptacle set adjacent, and not less than six (6) 
inches (152 mm) above the overflow rim of the 
fixture. 

809.0 Drinking Fountains 

Drinking fountains may be installed with indirect 
wastes. 



72 



INDIRECT WASTES 



810.0-811.4 



810.0 Steam and Hot Water Drainage 
Condensers and Sumps 

810.1 No steam pipe shall be directly connected to 
any part of a plumbing or drainage system, nor shall 
any water having a temperature above one hundred 
and forty (140)°F (60°C) be discharged under 
pressure directly into any part of a drainage system. 
Pipes from boilers shall discharge by means of 
indirect waste piping, as determined by the 
Administrative Authority or the boiler 
manufacturer's recommendations. Such pipes may 
be indirectly connected by discharging into an open 
or closed condenser, or intercepting sump of 
approved type, that will prevent the entrance of 
steam or such water under pressure into the 
drainage system. All closed condensers or sumps 
shall be provided with a vent which shall be taken 
off the top and extended separately, full size above 
the roof. All condensers and sumps shall be properly 
trapped at the outlet with a deep seal trap extending 
to within six (6) inches (152 mm) of the bottom of the 
tank. The top of the deep seal trap shall have a three- 
fourths (3/4) inch (19.1 mm) opening located at the 
highest point of the trap to serve as a siphon breaker. 
Outlets shall be taken off from the side in such a 
manner as to allow a water line to be maintained that 
will permanently occupy not less than one-half (1/2) 
the capacity of the condenser or sump. All inlets 
shall enter above the water line. Wearing plates or 
baffles shall be installed in the tank to protect the 
shell. The sizes of the blowoff line inlet, the water 
outlets, and the vent shall be as shown in Table 8-1. 
The contents of condensers receiving steam or hot 
water under pressure must pass through an open 
sump before entering the drainage system. 

810.2 Sumps, condensers, or intercepting tanks 
which are constructed of concrete shall have walls 
and bottom not less than four (4) inches (102 mm) in 
thickness, and the inside shall be cement plastered 
not less than one-half (1/2) inch (12.7 mm) in 
thickness. Condensers constructed of metal shall be 
not less than No. 12 U.S. Standard gauge (0.109 inch) 
(2.77 mm) and all such metal condensers shall be 
protected from external corrosion by an approved 
bituminous coating. 

81 0.3 Sumps and condensers shall be provided with 
suitable means of access for cleaning and shall 
contain a volume of not less than twice the volume 
of water removed from the boiler or boilers 
connected thereto when the normal water level of 
such boiler or boilers is reduced not less than four (4) 
inches (102 mm). 



TABLE 8-1 

Pipe Connections in Blowoff Condensers and Sumps 
Boiler Blowoff Water Outlet Vent 

*3/4" (19.1 mm) *3/4" (19.1 mm) 2" (51 mm) 

1" (25.4 mm) 1" (25.4 mm) 2-1/2" (64 mm) 

1-1/4" (32 mm) 1-1/4" (32 mm) 3" (76 mm) 

1-1/2" (38 mm) 1-1/2" (38 mm) 4" (102 mm) 
2" (51mm) 2" (51mm) 5" (127 mm) 

2-1/2" (64 mm) 2-1/2" (64 mm) 6" (152 mm) 

*To be used only with boilers of 100 square feet 
(9.29 m 2 ) of heating surface or less. 

810.4 Strainers. Every indirect waste interceptor 
receiving discharge containing particles that would 
clog the receptor drain shall have a readily 
removable beehive strainer. 

811.0 Chemical Wastes 

811.1 Chemical or industrial liquid wastes which 
are likely to damage or increase maintenance costs 
on the sanitary sewer system, detrimentally affect 
sewage treatment, or contaminate surface or 
subsurface waters, shall be pretreated to render them 
innocuous prior to discharge into a drainage system. 
Detailed plans and specifications of the pretreatment 
facilities shall be required by the Administrative 
Authority. 

Piping conveying industrial, chemical, or process 
wastes from their point of origin to sewer-connected 
pretreatment facilities shall be of such material and 
design as to adequately perform its intended 
function to the satisfaction of the Administrative 
Authority. Drainage discharge piping from 
pretreatment facilities or interceptors shall conform 
to standard drainage installation procedure. 

Copper tube shall not be used for chemical or 
industrial wastes as defined in this section. 

811.2 Each waste pipe receiving or intended to 
receive the discharge of any fixture into which acid 
or corrosive chemical is placed and each vent pipe 
connected thereto, shall be constructed of chemical 
resistant glass, high silicon iron pipe, or lead pipe 
not less than one-eighth (1/8) inch (3.2 mm) wall 
thickness, an approved type of ceramic glazed or 
unglazed vitrified clay, or other approved corrosion 
resistant materials. 

811.3 All jointing materials shall be of approved 
type and quality. 

811.4 Wherever practicable, all piping shall be 
readily accessible and installed with the maximum of 
clearance from other services. 



73 



811.5-815.2 



UNIFORM PLUMBING CODE 



81 1 .5 The owner shall make and keep a permanent 
record of the location of all piping and venting 
carrying chemical waste. 

81 1 .6 No chemical vent shall intersect vents for 
other services. 

811.7 No chemical wastes shall be discharged into 
the ground, local sewer, or other means without 
approval of the local Administrative Authority. 

811.8 The provisions in this section relative to 
materials and methods of construction, need not 
apply to minor installations such as small 
photographic or x-ray dark rooms or small research 
or control laboratories where minor amounts of 
adequately diluted chemicals are discharged. 

812.0 Clear Water Wastes 

Water lifts, expansion tanks, cooling jackets, 
sprinkler systems, drip or overflow pans, or similar 
devices which discharge clear wastewater into the 
building drainage system shall discharge through an 
indirect waste. 

813.0 Swimming Pools 

Pipes carrying wastewater from swimming or 
wading pools, including pool drainage and 
backwash from filters, shall be installed as an 
indirect waste. Where a pump is used to discharge 
waste pool water to the drainage system, the pump 
discharge shall be installed as an indirect waste. 

814.0 Refrigeration Wastes 

The indirect waste lines carrying refrigeration waste 
shall not be smaller than shown in the following pipe 
size schedule: 

814.1 1-1 /4 inch (32 mm) - 1 inlet serving not more 
than 100 cubic feet (2.8 m 3 ) of refrigeration space; 

814.2 2 inch (51 mm) - 4 to 12 1-1/4 inch (32 mm) 
inlets or the equivalent refrigeration space; 

814.3 3 inch (76 mm) - 13 to 36 1-1/4 (32 mm) inch 
inlets or the equivalent refrigeration space. 



TABLE 8-2 

Equipment Capacity Minimum Condensate 

in Tons of Pipe Diameter 

Refrigeration (kW) in inches (mm) 

Through 3 (Through 10.56) 3/4 (19.1) 

Through 20 (Through 70.33) 1 (25.4) 

Through 90 (Through 316.48) 1-1/4 (32) 

Through 125 (Through 439.6) 1-1/2 (38) 

Through 250 (Through 879.2) 2 (51 ) 

The size of condensate waste pipes may be for 
one unit or a combination of units, or as 
recommended by the manufacturer. The capacity of 
waste pipes assumes a one-eighth (1 /8) inch per foot 
(10.5 mm/m) or one percent slope, with the pipe 
running three-quarter (3/4) full at the following 
conditions: 



Outside Air - 20% 

DB WB 

90°F 73°F 

(32°C) (23°C) 



Room Air - 80% 

DB WB 

75°F 62.5°F 

(24°C) (17°) 



Condensate drain sizing for other slopes or 
other conditions shall be approved by the 
Administrative Authority. 

Air conditioning waste pipes shall be 
constructed of materials specified in Chapter 7. 

815.2 Point of Discharge. Air-conditioning 
condensate waste pipes shall connect indirectly to the 
drainage system through an airgap or airbreak to: 

81 5.2.1 A properly trapped receptor; or 

815.2.2 Other points of discharge acceptable to 
the Administrative Authority, including dry 
wells, leach pits, the tailpiece of plumbing 
fixtures, etc. 



815.0 Air-Conditioning Equipment. If discharged 
into the drainage system, any evaporative cooler, 
airwasher, or similar air-conditioning equipment 
shall drain by means of an indirect waste pipe. 

815.1 Size. Air-conditioning condensate waste 
pipes shall be independent of any drainage and 
waste system and shall not be smaller than shown in 
Table 8-2. 



74 



CHAPTER 9 

VENTS 



901.0 Vents Required 

Each plumbing fixture trap, except as otherwise 
provided in this Code, shall be protected against 
siphonage and back-pressure, and air circulation 
shall be assured throughout all parts of the drainage 
system by means of vent pipes installed in 
accordance with the requirements of this chapter and 
as otherwise required by this Code. 

902.0 Vents Not Required 

902.1 Where permitted by the Administrative 
Authority, vent piping may be omitted on an 
interceptor when such interceptor acts as a primary 
settling tank and discharges through a horizontal 
indirect waste pipe into a secondary interceptor. The 
second interceptor shall be properly trapped and 
vented. 

902.2 Traps serving sinks which are part of the 
equipment of bars, soda fountains, and counters, 
need not be vented when the location and 
construction of such bars, soda fountains, and 
counters is such as to make it impossible to do so. 
When such conditions exist, said sinks shall 
discharge by means of approved indirect waste pipes 
into a floor sink or other approved type receptor. 

903.0 Materials 

903.1 Vent pipe shall be cast iron, galvanized steel, 
galvanized wrought iron, lead, copper, brass, 
Schedule 40 ABS DWV, Schedule 40 PVC DWV or 
other approved materials having a smooth and 
uniform bore except that: 

903.1.1 No galvanized wrought iron or 
galvanized steel pipe shall be used underground 
and shall be kept at least six (6) inches (152 mm) 
above ground. 

903.1 .2 ABS and PVC DWV piping installations 
shall be limited to structures not exceeding three 
floors above grade. For the purpose of this 
subsection, the first floor of a building shall be 
that floor that has fifty (50) percent or more of 
the exterior wall surface area level with or above 
finished grade. One additional level that is the 
first level and not designed for human 
habitation and used only for vehicle parking, 
storage, or similar use shall be permitted. 

903.2 Use of Copper Tubing 

903.2.1 Copper tube for underground drainage 
and vent piping shall have a weight of not less 



than that of copper drainage tube type DWV. 

903.2.2 Copper tube for above ground drainage 
and vent piping shall have a weight of not less 
than that of copper drainage tube type DWV. 

903.2.3 Copper tube shall not be used for 
chemical or industrial wastes as defined in 
Section 811.0. 

903.2.4 In addition to the required incised 
marking, all hard drawn copper tubing shall be 
marked by means of a continuous and indelibly 
colored stripe at least one quarter (1/4) inch (6.4 
mm) in width, as follows: Type K, green; Type L, 
blue; Type M, red; Type DWV, yellow. 

903.3 Vent fittings shall be cast iron, galvanized 
malleable iron or galvanized steel, lead, copper, 
brass, ABS, PVC, or other approved materials, except 
that no galvanized malleable iron or galvanized steel 
fittings shall be used underground and shall be kept 
at least six (6) inches (152 mm) above ground. 

903.4 Changes in direction of vent piping shall be 
made by the appropriate use of approved fittings 
and no such pipe shall be strained or bent. Burred 
ends shall be reamed to the full bore of the pipe. 

904.0 Size of Vents 

904.1 The size of vent piping shall be determined 
from its length and the total number of fixture units 
connected thereto, as set forth in Table 7-5. The 
diameter of an individual vent shall not be less than 
one and one-fourth (1-1/4) inches (32 mm) nor less 
than one-half (1/2) the diameter of the drain to 
which it is connected. In addition, the drainage 
piping of each building and each connection to a 
public sewer or a private sewage disposal system 
shall be vented by means of one or more vent pipes, 
the aggregate cross-sectional area of which shall not 
be less than that of the largest required building 
sewer, as determined from Table 7-5. 

Exception: When connected to a common 
building sewer, the drainage piping of two (2) or 
more buildings located on the same lot and 
under one (1) ownership may be vented by 
means of piping sized in accordance with Table 
7-5, provided the aggregate cross-sectional area 
of all vents is not less than that of the largest 
required common building sewer. 

904.2 No more than one-third (1/3) of the total 
permitted length, per Table 7-5, of any minimum 
sized vent shall be installed in a horizontal position. 



75 



904.2 - 907.2 



UNIFORM PLUMBING CODE 



Exception: When a minimum sized vent is 
increased one (1) pipe size for its entire length, 
the maximum length limitation does not apply. 

904.3 For alternate methods of sizing vent piping, 
see Appendix L. 

905.0 Vent Pipe Grades and Connections 

905.1 All vent and branch vent pipes shall be free 
from drops or sags and each such vent shall be level 
or shall be so graded and connected as to drip back 
by gravity to the drainage pipe it serves. 

905.2 Where vents connect to a horizontal drainage 
pipe, each vent pipe shall have its invert taken off 
above the drainage center line of such pipe 
downstream of the trap being served. 

905.3 Unless prohibited by structural conditions, 
each vent shall rise vertically to a point not less than 
six (6) inches (152 mm) above the flood level rim of 
the fixture served before offsetting horizontally, and 
whenever two or more vent pipes converge, each 
such vent pipe shall rise to a point at least six (6) 
inches (152 mm) in height above the flood level rim 
of the plumbing fixture it serves before being 
connected to any other vent. Vents less than six (6) 
inches (152 mm) above the flood level rim of the 
fixture shall be installed with approved drainage 
fittings, material and grade to the drain. 

905.4 All vent pipes shall extend undiminished in 
size above the roof, or shall be reconnected with a 
soil or waste vent of proper size. 

905.5 The vent pipe opening from a soil or waste 
pipe, except for water closets and similar fixtures, 
shall not be below the weir of the trap. 

905.6 Two (2) fixtures may be served by a common 
vertical pipe when each such fixture wastes 
separately into an approved double fitting having 
inlet openings at the same level. 

906.0 Vent Termination 

906.1 Each vent pipe or stack shall extend through 
its flashing and shall terminate vertically not less 
than six (6) inches (152 mm) above the roof nor less 
than one (1) foot (305 mm) from any vertical surface. 

906.2 Each vent shall terminate not less than ten 
(10) feet (3048 mm) from, or at least three (3) feet (914 
mm) above any openable window, door, opening, air 
intake, or vent shaft, nor less than three (3) feet (914 
mm) in every direction from any lot line; alley and 
street excepted. 

906.3 Vent pipes shall be extended separately or 
combined, of full required size, not less than six (6) 
inches (152 mm) above the roof or fire wall. 



Flagpoling of vents is prohibited except where the 
roof is used for purposes other than weather 
protection. All vents within ten (10) feet (3048 mm) of 
any part of the roof that is used for such other 
purposes shall extend not less than seven (7) feet (2134 
mm) above such roof and shall be securely stayed. 

906.4 Vent pipes for outdoor installations shall 
extend at least ten (10) feet (3048 mm) above the 
surrounding ground and shall be securely 
supported. 

906.5 Joints at the roof around vent pipes shall be 
made watertight by the use of approved flashings or 
flashing material. 

906.6 Lead. See Table 14-1. Sheet lead shall be not 
less than the following: 

For safe pans - not less than four (4) pounds per 
square foot (19.5 kg/m 2 ) or 1/16 inch (1.6 mm) thick. 

For flashings or vent terminals - not less than 
three (3) pounds per square foot (14.7 kg/m 2 ) or 1.2 
mm thick. 

Lead bends and lead traps shall not be less than 
one-eighth (1/8) inch (3.2 mm) wall thickness. 

906.7 Frost or Snow Closure. Where frost or snow 
closure is likely to occur in locations having 
minimum design temperature below 0°F (-17.8°C) / 
vent terminals shall be a minimum of two (2) inches 
(51 mm) in diameter but in no event smaller than the 
required vent pipe. The change in diameter shall be 
made inside the building at least one (1) foot (305 
mm) below the roof in an insulated space and | 
terminate not less than ten (10) inches (254 mm) 
above the root or as required by the Administrative 
Authority. 

907.0 Vent Stacks and Relief Vents 

907.1 Each drainage stack which extends ten (10) or 
more stories above the building drain or other 
horizontal drain, shall be served by a parallel vent 
stack which shall extend undiminished in size from 
its upper terminal and connect to the drainage stack 
at or immediately below the lowest fixture drain. 
Each such vent stack shall also be connected to the 
drainage stack at each fifth floor, counting down 
from the uppermost fixture drain by means of a yoke 
vent, the size of which shall be not less in diameter 
than either the drainage or the vent stack, whichever 
is smaller. 

907.2 The yoke vent intersection with the vent stack 
shall be placed not less than forty-two (42) inches 
(1067 mm) above the floor level, and the yoke vent 
intersection with the drainage stack shall be by 
means of a wye branch fitting placed below the 
fixture branch serving that floor. 



76 



VENTS 



908.0-910.7 



908.0 Vertical Wet Venting 

908.1 Wet venting is limited to vertical drainage 
piping receiving the discharge from the trap arm of 
one (1) and two (2) fixture unit fixtures that also 
serves as a vent for not to exceed four (4) fixtures. All 
wet vented fixtures shall be within the same story; 
provided, further, that fixtures with a continuous 
vent discharging into a wet vent shall be within the 
same story as the wet vented fixtures. No wet vent 
shall exceed six (6) feet (1829 mm) in developed 
length. 

908.2 The vertical piping between any two (2) 
consecutive inlet levels shall be considered a wet 
vented section. Each wet vented section shall be a 
minimum of one (1) pipe size larger than the 
required minimum waste pipe size of the upper 
fixture or shall be one (1) pipe size larger than the 
required minimum pipe size for the sum of the 
fixture units served by such wet vented section, 
whichever is larger, but in no case less than two (2) 
inches (51 mm). 

908.3 Common vent sizing shall be the sum of the 
fixture units served but in no case smaller than the 
minimum vent pipe size required for any fixture 
served, or by Section 904.0. 

909.0 Special Venting for Island Fixtures 

Traps for island sinks and similar equipment shall be 
roughed in above the floor and may be vented by 
extending the vent as high as possible, but not less 
than the drainboard height and then returning it 
downward and connecting it to the horizontal sink 
drain immediately downstream from the vertical 
fixture drain. The return vent shall be connected to the 
horizontal drain through a wye-branch fitting and 
shall, in addition, be provided with a foot vent taken 
off the vertical fixture vent by means of a wye-branch 
immediately below the floor and extending to the 
nearest partition and then through the roof to the 
open air or may be connected to other vents at a point 
not less than six (6) inches (152 mm) above the flood 
level rim of the fixtures served. Drainage fittings shall 
be used on all parts of the vent below the floor level 
and a minimum slope of one-quarter (1/4) inch per 
foot (20.9 mm/m) back to the drain shall be 
maintained. The return bend used under the 
drainboard shall be a one (1) piece fitting or an 
assembly of a forty-five (45) degree (0.79 rad), a ninety 
(90) degree (1.6 rad) and a forty-five (45) degree (0.79 
rad) elbow in the order named. Pipe sizing shall be as 
elsewhere required in this Code. The island sink 
drain, upstream of the returned vent, shall serve no 
other fixtures. An accessible cleanout shall be installed 
in the vertical portion of the foot vent. 



910.0 Combination Waste and Vent Systems 

910.1 Combination waste and vent systems shall be 
permitted only where structural conditions preclude 
the installation of conventional systems as otherwise 
prescribed by this Code. 

910.2 Plans and specifications for each combination 
waste and vent system shall first be approved by the 
Administrative Authority before any portion of any 
such system is installed. 

910.3 Each combination waste and vent system, as 
defined in Chapter 2, shall be provided with a vent 
or vents adequate to assure free circulation of air. 
Any branch more than fifteen (15) feet (4572 mm) in 
length shall be separately vented in an approved 
manner. The minimum area of any vent installed in a 
combination waste and vent system shall be at least 
one-half (1/2) the inside cross-sectional area of the 
drain pipe served. The vent connection shall be 
downstream of the uppermost fixture. 

910.4 Each waste pipe and each trap in any such 
system shall be at least two (2) pipe sizes larger than 
the sizes required by Chapter 7 of this Code, and at 
least two (2) pipe sizes larger than any fixture 
tailpiece or connection. 

910.5 Unless specifically required or permitted by 
the Administrative Authority, no vertical waste pipe 
shall be used in any such system, except the tailpiece 
or connection between the outlet of a plumbing 
fixture and the trap therefor. Such tailpieces or 
connections shall be as short as possible, and in no 
case shall exceed two (2) feet (610 mm). 

Exception: Branch lines may have forty-five (45) 
degree (0.79 rad) vertical offsets. 

910.6 Cleanouts may not be required on any wet 
vented branch serving a single trap when the fixture 
tailpiece or connection is not less man two (2) inches 
(51 mm) in diameter and provides ready access for 
cleaning through the trap. An accessible cleanout 
shall be installed in each vent for the combination 
waste and vent system. 

910.7 No water closet or urinal shall be installed on 
any such system. Other one (1), two (2), or three (3) 
unit fixtures remotely located from the sanitary 
system and adjacent to a combination waste and 
vent system may be connected to such system in the 
conventional manner by means of waste and vent 
pipes of regular sizes, providing that the two (2) pipe 
size increase required in Section 910.4 is based on the 
total fixture unit load connected to the system. 

Note: See Appendix B of this Code for 
explanatory notes on the design of combination 
waste and vent systems. 

See also Appendix L, Alternate Plumbing Systems, 
for sizing vent piping systems. 



77 



UNIFORM PLUMBING CODE 



^ 



78 



CHAPTER 10 

TRAPS AND INTERCEPTORS 



1001.0 Traps Required 

1001.1 Each plumbing fixture, excepting those 
having integral traps, shall be separately trapped by 
an approved type waterseal trap. Not more than one 
(1) trap shall be permitted on a trap arm. 

1001.2 It is provided, however, that one (1) trap 
may serve a set of not more than three (3) single 
compartment sinks or laundry tubs of the same 
depth or three (3) lavatories immediately adjacent to 
each other and in the same room if the waste outlets 
are not more than thirty (30) inches (762 mm) apart 
and the trap is centrally located when three (3) 
compartments are installed. 

1001.3 No food waste disposal unit shall be 
installed with any set of restaurant, commercial, or 
industrial sinks served by a single trap; each such 
food waste disposal unit shall be connected to a 
separate trap. Each domestic clotheswasher and each 
laundry tub shall be connected to a separate and 
independent trap; except that a trap serving a 
laundry tub may also receive the waste from a 
clotheswasher set adjacent thereto. No clotheswasher 
or laundry tub shall be connected to any trap for a 
kitchen sink. 

1001.4 The vertical distance between a fixture outlet 
and the trap weir shall be as short as practicable, but 
in no case shall the tailpiece from any fixture exceed 
twenty-four (24) inches (610 mm) in length. 

1002.0 Traps Protected by Vent Pipes 

1002.1 Each plumbing fixture trap, except as 
otherwise provided in this Code, shall be protected 
against siphonage and back-pressure, and air 
circulation assured throughout all parts of the 
drainage system by means of a vent pipe installed in 
accordance with the requirements of this Code. 

1002.2 Each fixture trap shall have a protecting vent 
so located that the developed length of the trap arm 
from the trap weir to the inner edge of the vent shall be 
within the distance given in Table 10-1, but in no case 
less than two (2) times the diameter of the trap arm. 

1002.3 A trap arm may change direction without 
the use of a cleanout when such change of direction 
does not exceed ninety (90) degree (1.6 rad). All 
horizontal changes in direction of trap arms shall 
comply with Section 706.3. 

Exception: For trap arms three (3) inches (76 mm) 
in diameter and larger, the change of direction 
shall not exceed one hundred and thirty-five (135) 
degrees (2.36 rad) without the use of a cleanout. 



1002.4 The vent pipe opening from a soil or waste 
pipe, except for water closets and similar fixtures, 
shall not be below the weir of the trap. 

TABLE 10-1 

Horizontal Distance of Trap Arms 
(Except for water closets and similar fixtures)* 
Distance Distance 

Trap Arm Trap to Vent Trap Arm Trap to Vent 
Inches Feet Inches mm mm 

1-1/4 2 6 32 762 

1-1/2 3 6 38 1067 

2 5 51 1524 

3 6 76 1829 
4 & larger 10 1 02 & larger 3048 

Slope one-fourth (1/4) inch per foot (20.9 mm/m) 
*The developed length between the trap of a water 
closet or similar fixture (measured from the top of 
the closet ring [closet flange] to the inner edge of 
the vent) and its vent shall not exceed six (6) feet 
(1829 mm). 

1003.0 Traps - Described 

1003.1 Each trap, except one for an interceptor or 
similar device shall be self-cleaning. Traps for 
bathtubs, showers, lavatories, sinks, laundry tubs, 
floor drains, hoppers, urinals, drinking fountains, 
dental units, and similar fixtures shall be of standard 
design and weight and shall be of ABS, cast brass, 
cast iron, lead, PVC, or other approved material. An 
exposed and readily accessible drawn brass tubing 
trap, not less than 17 B&S Gauge (0.045 inch) (1.1 
mm), may be used on fixtures discharging domestic 
sewage but shall exclude urinals. Each trap shall 
have the manufacturer's name stamped legibly in the 
metal of the trap and each tubing trap shall have the 
gauge of the tubing in addition to the manufacturer's 
name. Every trap shall have a smooth and uniform 
interior waterway. 

1003.2 No more than one (1) approved slip joint 
fitting may be used on the outlet side of a trap, and 
no tubing trap shall be installed without a listed 
tubing trap adapter. 

1003.3 The size (nominal diameter) of a trap for a 
given fixture shall be sufficient to drain the fixture 
rapidly, but in no case less than nor more than one 
(1) pipe size larger than given in Table 7-3. The trap 
shall be the same size as the trap arm to which it is 
connected. 



79 



1004.0-1010.0 



UNIFORM PLUMBING CODE 



1004.0 Traps - Prohibited 

No form of trap which depends for its seal upon the 
action of movable parts shall be used. No trap which 
has concealed interior partitions shall be used. "S" 
traps, bell traps, and crown-vented traps shall be 
prohibited. No fixture shall be double trapped. 
Drum and bottle traps may be installed only when 
permitted by the Administrative Authority for 
special conditions. No trap shall be installed without 
a vent, except as otherwise provided in this Code. 

1005.0 Trap Seals 

Each fixture trap shall have a water seal of not less 
than two (2) inches (51 mm) and not more than four 
(4) inches (102 mm) except where a deeper seal is 
found necessary by the Administrative Authority for 

I special conditions or for special designs relating to 
handicapped accessible fixtures. Traps shall be set 
true with respect to their water seals and, where 
necessary, they shall be protected from freezing. 

1006.0 Floor Drain Traps 

Floor drains shall connect into a trap so constructed 
that it can be readily cleaned and of a size to serve 
efficiently the purpose for which it is intended. The 
drain inlet shall be so located that it is at all times in 
full view. When subject to reverse flow of sewage or 
liquid waste, such drains shall be equipped with an 
approved backwater valve. 

1007.0 Trap Seal Protection 

Floor drain or similar traps directly connected to the 
drainage system and subject to infrequent use shall 
be provided with an approved automatic means of 
maintaining their water seals, except where not 
deemed necessary for safety or sanitation by the 
Administrative Authority. When automatic trap 
priming devices are installed, they shall be accessible 
for maintenance. 

1008.0 Building Traps 

Building traps shall not be installed except where 
required by the Administrative Authority. Each 
building trap when installed shall be provided with 
a cleanout and with a relieving vent or fresh air 
intake on the inlet side of the trap which need not be 
larger than one-half the diameter of the drain to 
which it connects. Such relieving vent or fresh air 
intake shall be carried above grade and terminate in 
a screened outlet located outside the building. 



1009.0 Industrial Interceptors (Clarifiers) and 
Separators 

1009.1 When Required. Interceptors (clarifiers) 
(including grease, oil, and sand interceptors 
(clarifiers), etc.) shall be provided when, in the 
judgment of the Administrative Authority, they are 
necessary for the proper handling of liquid wastes 
containing grease, flammable wastes, sand, solids, 
acid or alkaline substances, or other ingredients 
harmful to the building drainage system, the public 
or private sewer or to public or private sewage 
disposal. 

1009.2 Approval. The size, type, and location of 
each interceptor (clarifier) or separator shall be 
approved by the Administrative Authority, in 
accordance with its standards. Except where 
otherwise specifically permitted, no wastes other 
than those requiring treatment or separation shall be 
discharged into any interceptor (clarifier). 

1009.3 Design. Interceptors (clarifiers) for sand and 
similar heavy solids shall be so designed and located 
as to be readily accessible for cleaning and shall have 
a water seal of not less than six (6) inches (152 mm). 

1009.4 Relief Vent. Interceptors (clarifiers) shall be 
so designed that they will not become air bound if 
closed covers are used. Each interceptor (clarifier) 
shall be properly vented. 

1009.5 Location. Each interceptor (clarifier) cover 
shall be readily accessible for servicing and 
maintaining the interceptor (clarifier) in working and 
operating condition. The use of ladders or the 
removal of bulky equipment in order to service 
interceptors (clarifiers) shall constitute a violation of 
accessibility. Location of all interceptors (clarifiers) 
shall be shown on the approved building plan. 

1009.6 Maintenance of Interceptors. Interceptors 
shall be maintained in efficient operating condition 
by periodic removal of accumulated grease, scum, 
oil, or other floating substances, and solids deposited 
in the interceptor. 

1009.7 Discharge. The waste pipe from oil and 
sand interceptors shall discharge as approved by the 
Administrative Authority. 

1010.0 Slaughter Houses, Packing Establish- 
ments, etc. 

Every fish, fowl, and animal slaughter house or 
establishment and every fish, fowl, and meat 
packing or curing establishment and every soap 
factory, tallow rendering, fat rendering and hide 
curing establishment, or any other establishment 
from which considerable amounts of grease are 
likely to be discharged into any plumbing system, 



80 



TRAPS AND INTERCEPTORS 



1010.0-1014.9 



sewer system, or private sewage disposal system, 
shall be connected to and shall drain or discharge 
into a grease interceptor (clarifier) of an approved 
design for this use. 

1011.0 Minimum Requirements for Auto Wash 
Racks 

Every private or public wash rack and /or floor or 
slab used for cleaning machinery or machine parts 
shall be adequately protected against storm or 
surface water and shall drain or discharge into an 
interceptor (clarifier) of an approved design for this 
use. 



1012.0 Laundries. Laundry equipment that does 
not have integral strainers shall discharge into an 
interceptor having a wire basket or similar device, 
that is removable for cleaning and that will prevent 
passage into the drainage system of solids one-half 
(1/2) inch (12.7 mm) or larger in maximum 
dimension, such as string, rags, buttons, or other 
solid materials detrimental to the public sewerage 
system. 

1013.0 Bottling Establishments. Bottling plants 
shall discharge their process wastes into an 
interceptor which will provide for the separation of 
broken glass or other solids, before discharging 
liquid wastes into the drainage system. 

1014.0 Grease Traps and Grease Interceptors 

1 01 4.1 When, in the judgment of the Administrative 
Authority, waste pretreatment is required, an 
approved type grease trap complying with the 
provisions of this section shall be installed in the 
waste line leading from sinks, drains, and other 
fixtures or equipment in establishments such as 
restaurants, cafes, lunch counters, cafeterias, bars 
and clubs, hotel, hospital, sanitarium, factory or 
school kitchens, or other establishments where 
grease may be introduced into the drainage or 
sewage system in quantities that can effect line 
stoppage or hinder sewage treatment or private 
sewage disposal. A grease trap is not required for 
individual dwelling units or for any private living 
quarters. 

1014.2 No grease trap shall be installed which has 
an approved rate of flow of more than fifty-five (55) 
gallons per minute (3.5 L/s), nor less than twenty 
(20) gallons per minute (1.3 L/s), except when 
specially approved by the Administrative Authority. 

1 01 4.3 Each plumbing fixture or piece of equipment 
connected to a grease trap shall be provided with an 



approved type flow control or restricting device 
installed in a readily accessible and visible location 
in the tailpiece or drain outlet of each such fixture. 
Flow control devices shall be so designed that the 
flow through such device or devices shall at no time 
be greater than the rated capacity of the grease trap. 
No flow control device having adjustable or 
removable parts shall be approved. 

Exception: Listed grease traps with approved 
type flow controls or restricting devices may be 
installed in an accessible location in accordance 
with the manufacturer's instructions. 

1014.4 Each grease trap required by this section 
shall have an approved rate of flow which is not less 
than that given in Table 10-2 for the total number of 
connected fixtures. The total capacity in gallons (L) 
of fixtures discharging into any such grease trap 
shall not exceed two and one-half (2-1/2) times the 
certified gpm (L/s) flow rate of the grease trap as per 
Table 10-2. 

Any grease trap installed with the inlet more 
than four (4) feet (1219 mm) lower in elevation than 
the outlet of any fixture discharging into such grease 
trap shall have an approved rate of flow which is not 
less than fifty (50) percent greater than that given in 
Table 10-2. Not more than four (4) separate fixtures 
shall be connected to or discharged into any one (1) 
grease trap. 

For the purpose of this section, the term 
"fixture" shall mean and include each plumbing 
fixture, appliance, apparatus, or other equipment 
required to be connected to or discharged into a 
grease trap by any provision of this section. 

1014.5 Each fixture discharging into a grease trap 
shall be individually trapped and vented in an 
approved manner. An approved type grease trap 
may be used as a fixture trap for a single fixture 
when the horizontal distance between the fixture 
outlet and the grease trap does not exceed four (4) 
feet (1219 mm) and the vertical tailpipe or drain does 
not exceed two and one-half (2-1 /2) feet (762 mm). 

1 01 4.6 Grease traps shall be maintained in efficient 
operating condition by periodic removal of the 
accumulated grease. No such collected grease shall 
be introduced into any drainage piping, or public or 
private sewer. 

1014.7 No water jacketed grease trap or grease 
interceptor shall be approved or installed. 

1 014.8 Each grease trap shall have an approved water 
seal of not less than two (2) inches (51 mm) in depth or 
the diameter of its outlet, whichever is greater. 

1014.9 Waste in excess of one hundred-forty (140)°F 
(60°C) shall not discharge into a grease trap. 



81 



1014.10-1017.1 



UNIFORM PLUMBING CODE 



1014.10 Grease Interceptors for Commercial 
Kitchens. Required grease interceptors, installed 
outdoors, shall comply with the provisions of 
Appendix H. 

1015.0 Food Waste Disposal and Dishwasher 
Prohibited 

Unless specifically required or permitted by the 
Administrative Authority, no food waste disposal 
unit or dishwasher shall be connected to or discharge 
into any grease trap. 

TABLE 10-2 

Grease Traps 



Total Number 


Required Rate of 


Grease Retention 


of Fixtures 


Flow per Minute, 


Capacity, 


Connected 


Gallons 


Pounds 


1 


20 


40 


2 


25 


50 


3 


35 


70 


4 


50 


100 



TABLE 10-2 

Grease Traps (Metric) 



Total Number 


Required Rate of 


Grease Retention 


of Fixtures 


Flow per Minute, 


Capacity, 


Connected 


Liters 


kg 


1 


76 


18 


2 


95 


22 


3 


132 


31 


4 


189 


45 



Note: For installations with more than four (4) 
fixtures, the Administrative Authority may permit the 
use of larger grease traps designed not to exceed 
the parameters of Section 1014.4, but not to 
exceed seventy-five (75) GPM (284 liters per 
minute). 

1016.0 Sand Interceptors 

1016.1 Where Required 

1016.1.1 Whenever the discharge of a fixture or 
drain may contain solids or semi-solids heavier 
than water that would be harmful to a drainage 
system or cause a stoppage within the system, 
the discharge shall be through a sand 
interceptor. Multiple floor drains may discharge 
into one sand interceptor. 

1016.1.2 Sand interceptors are required 
whenever the Administrative Authority deems it 



advisable to have a sand interceptor to protect 
the drainage system. 

1016.2 Construction and Size 

Sand interceptors shall be built of brick or concrete, 
prefabricated coated steel or other watertight 
material. The interceptor shall have an interior baffle 
for full separation of the interceptor into two (2) 
sections. The outlet pipe shall be the same size as the 
inlet size of the oil interceptor, the minimum being 
three (3) inches (76 mm), and the baffle shall have 
two (2) openings of the same diameter as the outlet 
pipe and at the same invert as the outlet pipe. These 
openings shall be staggered so that there cannot be a 
straight line flow between any inlet pipe and the 
outlet pipe. The invert of the inlet pipe shall be no 
lower than the invert of the outlet pipe. 

The sand interceptor shall have a minimum 
dimension of two (2) feet square (0.2 m 2 ) for the net 
free opening of the inlet section and a minimum 
depth under the invert of the outlet pipe of two (2) 
feet (610 mm). 

For each five (5) gallons (18.9 L) per minute flow 
or fraction thereof over twenty (20) gallons {75 J L) 
per minute, the area of the sand interceptor inlet 
section is to be increased by one (1) square foot (0.09 
m 2 ). The outlet section shall at all times have a 
minimum area of fifty (50) percent of the inlet 
section. 

The outlet section shall be covered by a solid 
removable cover set flush with the finished floor, 
and the inlet section shall have an open grating set 
flush with the finished floor and suitable for the 
traffic in the area in which it is located. 

1 01 6.3 Separate Use. Sand and similar interceptors 
for every solid shall be so designed and located as to 
be readily accessible for cleaning, shall have a water 
seal of not less than six (6) inches (152 mm), and shall 
be vented. 

1016.4 Alternate Design. Alternate designs for 
construction or baffling of sand interceptors 
complying with the intent of this Code may be 
submitted to the Administrative Authority for 
approval. 

1017.0 Oil and Flammable Liquids Interceptors 

1017.1 Interceptors Required. All repair garages 
and gasoline stations with grease racks or grease 
pits, and all factories which have oily, flammable, or 
both types of wastes as a result of manufacturing, 
storage, maintenance, repair, or testing processes, 
shall be provided with an oil or flammable liquid 
interceptor which shall be connected to all necessary 
floor drains. The separation or vapor compartment 



82 



TRAPS AND INTERCEPTORS 



1017.1 -1017.3 



shall be independently vented to the outer air. If two 

(2) or more separation or vapor compartments are 
used, each shall be vented to the outer air or may 
connect to a header which is installed at a minimum 
of six (6) inches (152 mm) above the spill line of the 
lowest floor drain and vented independently to the 
outer air. The minimum size of a flammable vapor 
vent shall not be less than two (2) inches (51 mm), 
and when vented through a sidewall, the vent shall 
not be less than ten (10) feet (3048 mm) above the 
adjacent level at an approved location. The 
interceptor shall be vented on the sewer side and 
shall not connect to a flammable vapor vent. All oil 
and flammable interceptors shall be provided with 
gastight cleanout covers which shall be readily 
accessible. The waste line shall not be less than three 

(3) inches (76 mm) in diameter with a full-size 
cleanout to grade. When an interceptor is provided 
with an overflow, it shall be provided with an 
overflow line (not less than two (2) inches (51 mm) in 
diameter) to an approved waste oil tank having a 
minimum capacity of five hundred fifty (550) gallons 
(2080 L) and meeting the requirements of the 
Administrative Authority. The waste oil from the 
separator shall flow by gravity or shall be pumped to 
a higher elevation by an automatic pump. Pumps 
shall be adequately sized and accessible. Waste oil 
tanks shall have a two (2) inch (51 mm) minimum 
pump-out connection at grade and a one and one- 
half (1-1/2) inch (38 mm) minimum vent to 
atmosphere at an approved location at least ten (10) 
feet (3048 mm) above grade. 

1017.2 Design of Interceptors. Each manufactured 
interceptor that is rated shall be stamped or labeled 
by the manufacturer with an indication of its full 
discharge rate in gpm (L/s). The full discharge rate 
to such an interceptor shall be determined at full 
flow. Each interceptor shall be rated equal to or 
greater than the incoming flow and shall be 
provided with an overflow line to an underground 
tank. 

Interceptors not rated by the manufacturer shall 
have a depth of not less than two (2) feet (610 mm) 
below the invert of the discharge drain. The outlet 
opening shall have not less than an eighteen (18) inch 
(457 mm) water seal and shall have a minimum 
capacity as follows: where not more than three (3) 
motor vehicles are serviced and/or stored, 
interceptors shall have a minimum capacity of six (6) 
cubic feet (0.2 m 3 ), and one (1) cubic foot (0.03 m 3 ) of 
capacity shall be added for each vehicle up to ten 
(10) vehicles. Above ten (10) vehicles, the 
Administrative Authority shall determine the size of 
the interceptor required. Where vehicles are serviced 
only and not stored, interceptor capacity shall be 



based on a net capacity of one (1) cubic foot (0.03 m 3 ) 
for each one hundred (100) square feet (9.3 m 2 ) of 
surface to be drained into the interceptor, with a 
minimum of six (6) cubic feet (0.2 m 3 ). 

1017.3 Combination Oil and Sand Interceptor. A 

combination oil and sand interceptor may be 
installed when the design is approved in writing by 
the Administrative Authority. 

See also Appendix H, Procedures for Sizing 
Commercial Kitchen Grease Interceptors. 



83 



UNIFORM PLUMBING CODE 



~) 



"> 



84 



CHAPTER 11 

STORM DRAINAGE 



1101.0 General 

1101.1 Where Required. All roofs, paved areas, 
yards, courts, and courtyards shall be drained into a 
separate storm sewer system, or into a combined 
sewer system where a separate storm sewer system 
is not available, or to some other place of disposal 
satisfactory to the Administrative Authority. In the 
case of one- and two-family dwellings, storm water 
may be discharged on flat areas such as streets or 
lawns so long as the storm water shall flow away 
from the building and away from adjoining 
property, and shall not create a nuisance. 

1101.2 Storm Water Drainage to Sanitary Sewer 
Prohibited. Storm water shall not be drained into 
sewers intended for sanitary drainage only. 

1101.3 Material Uses. Rainwater piping placed 
within the interior of a building or run within a vent 
or shaft shall be of cast iron, galvanized steel, 
wrought iron, brass, copper, lead, Schedule 40 ABS 
DWV, Schedule 40 PVC DWV, or other approved 
materials, and changes in direction shall conform to 
the requirements of Section 706.0. ABS and PVC 
DWV piping installations shall be limited to 
structures not exceeding three floors above grade. 
For the purpose of this subsection, the first floor of a 
building shall be that floor that has fifty (50) percent 
or more of the exterior wall surface area level with or 
above finished grade. One (1) additional level that is 
the first level and not designed for human habitation 
and used only for vehicle parking, storage, or similar 
use shall be permitted. 

1101.4 Expansion Joints Required. Expansion 
joints or sleeves shall be provided where warranted 
by temperature variations or physical conditions. 

1101.5 Subsoil Drains 

1101.5.1 Subsoil drains shall be provided 
around the perimeter of buildings having 
basements, cellars, or crawl spaces or floors 
below grade. Such subsoil drains may be 
positioned inside or outside of the footing, shall 
be of perforated, or open-jointed approved drain 
tile or pipe not less than three (3) inches (76 mm) 
in diameter, and shall be laid in gravel, slag, 
crushed rock, approved three-quarter (3/4) inch 
(19.1 mm) crushed recycled glass aggregate, or 
other approved porous material with a 
minimum of four (4) inches (102 mm) 
surrounding the pipe on all sides. Filter media 
shall be provided for exterior subsoil piping. 

1101.5.2 Subsoil drains shall be piped to a 



storm drain, to an approved water course, to the 
front street curb or gutter, or to an alley; or the 
discharge from the subsoil drains shall be 
conveyed to the alley by a concrete gutter. 
Where a continuously flowing spring or 
groundwater is encountered, subsoil drains 
shall be piped to a storm drain or an approved 
water course. 

1101 .5.3 Where it is not possible to convey the 
drainage by gravity, subsoil drains shall 
discharge to an accessible sump pit provided 
with an approved automatic electric pump. A 
sump pit shall be at least fifteen (15) inches (381 
mm) in diameter, eighteen (18) inches (457 mm) 
in depth, and provided with a fitted cover. The 
sump pump shall have an adequate capacity to 
discharge all water coming into the sump as it 
accumulates to the required discharge point, and 
the capacity of the pump shall not be less than 
fifteen (15) gpm (1.0 L/s). The discharge piping 
from the sump pump shall be a minimum of one 
and one-half (1-1/2) inches (38 mm) in diameter 
and have a union to make the pump accessible 
for servicing. 

1101.5.4 For separate dwellings not serving 
continuously flowing springs or groundwater, 
the sump discharge pipe may discharge onto a 
concrete splash block with a minimum length of 
twenty-four (24) inches (610 mm). This pipe shall 
be within four (4) inches (102 mm) of the splash 
block and positioned to direct the flow parallel 
to the recessed line of the splash block. 

1101.5.5 Subsoil drains subject to backflow 
when discharging into a storm drain shall be 
provided with a backwater valve in the drain 
line so located as to be accessible for inspection 
and maintenance. 

1101.5.6 Nothing in Section 1101.5 shall 
prevent drains that serve either subsoil drains or 
areaways of a detached building from 
discharging to a properly graded open area, 
provided that: 

(1) They do not serve continuously flowing 
springs or groundwater; 

(2) The point of discharge is at least ten (10) 
feet (3048 mm) from any property line; and 

(3) It is impracticable to discharge such 
drains to a storm drain, to an approved 
water course, to the front street curb or 
gutter, or to an alley. 



85 



1101.6-1101.12 



UNIFORM PLUMBING CODE 



1101.6 Building Subdrains. Building subdrains 
located below the public sewer level shall discharge 
into a sump or receiving tank, the contents of which 
shall be automatically lifted and discharged into the 
drainage system as required for building sumps. 

1101.7 Areaway Drains. All open subsurface space 
adjacent to a building, serving as an entrance to the 
basement or cellar of a building, shall be provided 
with a drain or drains. Such areaway drains shall be 
two (2) inches (51 mm) minimum diameter for 
areaways not exceeding one hundred (100) square feet 
(9.3 m 2 ) in area, and shall be discharged in the manner 
provided for subsoil drains not serving continuously 
flowing springs or ground water (see Section 1101.5.2). 
Areaways in excess of one hundred (100) square feet 
(9.3 m 2 ) shall not drain into subsoil. Areaway drains 
for areaways exceeding one hundred (100) square feet 
(9.3 m 2 ) shall be sized according to Table 11-2. 

1101.8 Window Areaway Drains. Window 
areaways not exceeding ten (10) square feet (0.9 m 2 ) 
in area may discharge to the subsoil drains through a 
two (2) inch (51 mm) pipe. However, window 
areaways exceeding ten (10) square feet (0.9 m 2 ) in 
area shall be handled in the manner provided for 
entrance areaways (see Section 1101.7). 

1101.9 Filling Stations and Motor Vehicle 
Washing Establishments. Public filling stations 
and motor vehicle washing establishments shall have 
the paved area sloped toward sumps or gratings 
within the property lines. Curbs not less than six (6) 
inches (152 mm) high shall be placed where required 
to direct water to gratings or sumps. 

1101.10 Paved Areas. Where the occupant creates 
surface water drainage, the sumps, gratings or floor 
drains shall be piped to a storm drain or an 
approved water course. 

1 1 01 .1 1 Roof Drainage 

1101.11.1 Primary Roof Drainage. Roof areas 
of a building shall be drained by roof drains or 
gutters. The location and sizing of drains and 
gutters shall be coordinated with the structural 
design and pitch of the roof. Unless otherwise 
required by the Administrative Authority, roof 
drains, gutters, vertical conductors or leaders, 
and horizontal storm drains for primary 
drainage shall be sized based on a storm of sixty 
(60) minutes duration and 100-year return 
period (see Appendix D). 

1101.11.2 Secondary Roof Drainage 

1101.11.2.1 Where parapet walls or other 
construction extend above the roof and 
create areas where storm water would 
become trapped if the primary roof drainage 
system failed to provide sufficient drainage, 



an independent secondary roof drainage 
system consisting of scuppers, standpipes, 
or roof drains shall be provided. Secondary 
roof drainage systems shall be sized in 
accordance with Section 1101.11.1 of this 
Code. Overflow drains shall be the same 
size as the roof drains with the inlet flow 
line two (2) inches (51 mm) above the low 
point of the roof and shall be installed 
independent from the roof drains. 

1101.11 .2.2 Where secondary roof drainage 
is provided by means of roof drains or 
standpipes, the secondary system shall be 
separate from the primary system and shall 
discharge independently at grade or other 
approved point of discharge. 

1 1 01 .1 1 .2.3 Where secondary roof drainage 
is provided, the overflow level(s) into the 
secondary system shall be determined by 
the structural design of the roof, including 
roof deflection, at a level not less than two 
(2) inches (51 mm) above the level of the 
primary drain. An allowance shall be made 
to account for the required overflow head of 
water above the secondary inlets. The 
elevation of the secondary inlet plus the 
required overflow head shall not exceed the 
maximum allowable water level on the roof. 

1101.11.2.4 Scuppers shall be sized as 
rectangular weirs, using hydraulic 
principles to determine the required length 
and resulting overflow head (see Appendix 
D). Secondary roof drains and standpipes 
shall be sized according to Table 11-1. 
Where standpipes are used, the head 
allowance required under section 1101.11.2.3 
shall be not less than one and one-half (1- 
1/2) inches (38 mm). 

1101.11.3 Equivalent Systems. When 
approved by the Administrative Authority, the 
requirements of Sections 1101.11.1 and 1101.11.2 
shall not preclude the installation of an 
engineered roof drainage system that has 
sufficient capacity to prevent water from 
ponding on the roof in excess of that allowed in 
the roof structural design with a rainfall rate of 
at least twice that for a 100-year, 60-minute 
storm and with a blockage in any single point in 
the storm drainage system. 

1101.12 Cleanouts 

1 1 01 .1 2.1 Cleanouts for building storm drains 
shall comply with the requirements of Section 
719.0 of this Code. 

1101.12.2 Rain leaders and conductors 



86 



STORM DRAINAGE 



1101.12-1105.2 



connected to a building storm sewer shall have a 
cleanout installed at the base of the outside 
leader or outside conductor before it connects to 
the horizontal drain. 

1101.13 All rainwater sumps serving "public use" 
occupancy buildings shall be provided with dual 
pumps arranged to function alternately in case of 
overload of mechanical failure. 



1102.0 Materials 

1102.1 Conductors 

1102.1.1 Conductors installed aboveground in 
buildings shall be constructed of materials 
specified in Table 14-1. 

1102.1.2 The inside of conductors installed 
above ground level shall be of seamless copper 
water tube, Type K, L or M; Schedule 40 copper 
pipe or Schedule 40 copper alloy pipe; Type DWV 
copper drainage tube; service weight cast iron soil 
pipe or hubless cast iron soil pipe; standard 
weight galvanized steel pipe; or Schedule 40 ABS 
or Schedule 40 PVC plastic pipe. 

1102.2 Leaders 

1102.2.1 Leaders shall be constructed of 
materials specified in Table 14-1. 

1102.2.2 Leaders shall be of seamless copper 
water tube, Type K, L or M; Schedule 40 copper 
pipe; Schedule 40 copper alloy pipe; type DWV 
copper drainage tube; service weight cast iron 
soil pipe or hubless cast iron soil pipe; 
galvanized steel sheet metal or copper sheet 
metal; standard weight galvanized steel pipe; 
Class DL or XL lead pipe; or Schedule 40 ABS or 
Schedule 40 PVC plastic pipe. 

1102.3 Underground Building Storm Drains. All 

underground building storm drains shall be 
constructed of materials specified in Table 14-1. 

1102.4 Building Storm Sewers. Building storm 
sewers shall be constructed of materials specified in 
Table 14-1. 

1102.5 Subsoil Drains 

1102.5.1 Subsoil drains shall be constructed of 
materials specified in Table 14-1. 

1102.5.2 Subsoil drains shall be open-jointed or 
of perforated pipe, vitrified clay, plastic, cast 
iron, or porous concrete. 

1103.0 Traps on Storm Drains and Leaders 

1103.1 Where Required. Leaders and storm drains, 
when connected to a combined sewer, shall be 
trapped. Floor and area drains connected to a storm 
drain shall be trapped. 



Exception: Traps shall not be required where 
roof drains, rain leaders and other inlets are at 
locations allowed under Section 906.0, Vent 
Terminals. 

1103.2 Where Not Required. No trap shall be 
required for a leader(s) or conductor(s) which is 
connected to a sewer carrying storm water 
exclusively. 

1103.3 Trap Size. Traps, when installed for 
individual conductors, shall be the same size as the 
horizontal drain to which they are connected. 

1103.4 Method of Installation of Combined 
Sewer. Individual storm-water traps shall be 
installed on the storm-water drain branch serving 
each storm-water inlet, or a single trap shall be 
installed in the main storm drain just before its 
connection with the combined building sewer. Such 
traps shall be provided with an accessible cleanout 
on the outlet side of the trap. 

1104.0 Leaders, Conductors, and Connections 

1104.1 Improper Use. Leaders or conductors shall 
not be used as soil, waste, or vent pipes, nor shall soil, 
waste, or vent pipes be used as leaders or conductors. 

1104.2 Protection of Leaders. Leaders installed 
along alleyways, driveways, or other locations where 
they may be exposed to damage shall be protected 
by metal guards, recessed into the wall, or 
constructed from ferrous pipe. 

1104.3 Combining Storm with Sanitary Drainage. 

The sanitary and storm drainage system of a 
building shall be entirely separate, except where a 
combined sewer is used, in which case the building 
storm drain shall be connected in the same 
horizontal plane through single wye fittings to the 
combined building sewer at least ten (10) feet (3048 
mm) downstream from any soil stack. 

1105.0 Roof Drains 

1105.1 Material 

1105.1.1 Roof drains shall be constructed of 
materials specified in Table 14-1. 

1105.1.2 Roof drains shall be of cast iron, 
copper or copper alloy, lead or plastic. 

1105.2 Dome or Strainer for General Use. All roof 
drains and overflow drains, except those draining to | 
hanging gutters, shall be equipped with strainers -* 
extending not less than four (4) inches (102 mm) 
above the surface of the roof immediately adjacent to 
the drain. Strainers shall have a minimum inlet area | 
above the roof level of not less than one and one-half 
(1-1/2) times the area of the conductor or leader to 
which the drain is connected. 



87 



Table 11-1 



UNIFORM PLUMBING CODE 



TABLE 11-1 

Sizing Roof Drains, Leaders, and Vertical Rainwater Piping 



Size of Drain, 




Maximum Allowable Horizontal Projected Roof Areas 




Leader or Pipe, 


Flow, 




Square Feet at Various Rainfall Rates 




Inches 


gpm 
















1"/hr 


2"/hr 


3 n /hr 


4"/hr 5"/hr 


6"/hr 


2 


23 


2176 


1088 


725 


544 435 


363 


3 


67 


6440 


3220 


2147 


1610 1288 


1073 


4 


144 


13,840 


6920 


4613 


3460 2768 


2307 


5 


261 


25,120 


12,560 


8373 


6280 5024 


4187 


6 


424 


40,800 


20,400 


13,600 


10,200 8160 


6800 


8 


913 


88,000 


44,000 


29,333 


22,000 17,600 


14,667 



Size of Drain 
Leader or Pipe, Flow, 
mm L/s 



TABLE 11-1 (Metric) 

Sizing Roof Drains, Leaders, and Vertical Rainwater Piping 

Maximum Allowable Horizontal Projected Roof Areas 
Square Meters at Various Rainfall Rates 

25mm/hr 50mm/hr 75mm/hr 100mm/hr 125mm/hr 150mm/hr 



50 


1.5 


202 


101 


67 


51 


40 


34 


75 


4.2 


600 


300 


200 


150 


120 


100 


100 


9.1 


1286 


643 


429 


321 


257 


214 


125 


16.5 


2334 


1117 


778 


583 


467 


389 


150 


26.8 


3790 


1895 


1263 


948 


758 


632 


200 


57.6 


8175 


4088 


2725 


2044 


1635 


1363 



Notes: 

1. The sizing data for vertical conductors, leaders, and drains is based on the pipes flowing 7/24 full. 

2. For rainfall rates other than those listed, determine the allowable roof area by dividing the area given in the 
1 inch/hour (25 mm/hour) column by the desired rainfall rate. 

3. Vertical piping may be round, square, or rectangular. Square pipe shall be sized to enclose its equivalent 
round pipe. Rectangular pipe shall have at least the same cross-sectional area as its equivalent round pipe, 
except that the ratio of its side dimensions shall not exceed 3 to 1 . 



88 



STORM DRAINAGE 



Table 11 -2 



Size of 



Inches 



Size of 



Inches 



Size of 



Inches 



Flow at 



Pipe, 1/8"/ft. Slope, 



TABLE 11-2 

Sizing of Horizontal Rainwater Piping 



Maximum Allowable Horizontal Projected Roof Areas 
Square Feet at Various Rainfall Rates 



gpm 







1 f, /hr 


2"/hr 


3"/hr 


4"/hr 


5"/hr 


6"/hr 


3 


34 


3288 


1644 


1096 


822 


657 


548 


4 


78 


7520 


3760 


2506 


1880 


1504 


1253 


5 


139 


13,360 


6680 


4453 


3340 


2672 


2227 


6 


222 


21,400 


10,700 


7133 


5350 


4280 


3566 


8 


478 


46,000 


23,000 


15,330 


1 1 ,500 


9200 


7670 


10 


860 


82,800 


41 ,400 


27,600 


20,700 


16,580 


13,800 


12 


1384 


133,200 


66,600 


44,400 


33,300 


26,650 


22,200 


15 


2473 


238,000 


119,000 


79,333 


59,500 


47,600 


39,650 



Flow at 



Pipe, 1/4"/ft. Slope, 



Maximum Allowable Horizontal Projected Roof Areas 
Square Feet at Various Rainfall Rates 



gpm 







r/hr 


2 M /hr 


3"/hr 


4"/hr 


5 M /hr 


6"/hr 


3 


48 


4640 


2320 


1546 


1160 


928 


773 


4 


110 


10,600 


5300 


3533 


2650 


2120 


1766 


5 


196 


18,880 


9440 


6293 


4720 


3776 


3146 


6 


314 


30,200 


15,100 


10,066 


7550 


6040 


5033 


8 


677 


65,200 


32,600 


21 ,733 


16,300 


13,040 


10,866 


10 


1214 


116,800 


58,400 


38,950 


29,200 


23,350 


19,450 


12 


1953 


188,000 


94,000 


62,600 


47,000 


37,600 


31 ,350 


15 


3491 


336,000 


168,000 


112,000 


84,000 


67,250 


56,000 



Flow at 



Pipe, 1/2"/ft. Slope, 



Maximum Allowable Horizontal Projected Roof Areas 
Square Feet at Various Rainfall Rates 



gpm 







V/hr 


2 H /hr 


3 n /hr 


4"/hr 


5 n /hr 


6"/hr 


3 


68 


6576 


3288 


2192 


1644 


1310 


1096 


4 


156 


15,040 


7520 


5010 


3760 


3010 


2500 


5 


278 


26,720 


13,360 


8900 


6680 


5320 


4450 


6 


445 


42,800 


21,400 


14,267 


10,700 


8580 


7140 


8 


956 


92,000 


46,000 


30,650 


23,000 


18,400 


15,320 


10 


1721 


165,600 


82,800 


55,200 


41 ,400 


33,150 


27,600 


12 


2768 


266,400 


133,200 


88,800 


66,600 


53,200 


44,400 


15 


4946 


476,000 


238,000 


158,700 


119,000 


95,200 


79,300 



Notes: 

1 . The sizing data for horizontal piping is based on the pipes flowing full. 

2. For rainfall rates other than those listed, determine the allowable roof area by dividing the area given in the 
1 inch/hour (25 mm/hour) column by the desired rainfall rate. 



89 



Table 11-2 (Metric) 



UNIFORM PLUMBING CODE 



Size of 



Flow at 



Pipe, 10 mm/m Slope, 



TABLE 11-2 (Metric) 

Sizing of Horizontal Rainwater Piping 

Maximum Allowable Horizontal Projected Roof Areas 
Square Meters at Various Rainfall Rates 



mm 



L/s 



25mm/hr 50mm/hr 75mm/hr 100mm/hr 125mm/hr 150mm/hr 



75 


2.1 


305 


153 


102 


76 


61 


51 


100 


4.9 


700 


350 


233 


175 


140 


116 


125 


8.8 


1241 


621 


414 


310 


248 


207 


150 


14.0 


1988 


994 


663 


497 


398 


331 


200 


30.2 


4273 


2137 


1424 


1068 


855 


713 


250 


54.3 


7692 


3846 


2564 


1923 


1540 


1282 


300 


87.3 


12,375 


6187 


4125 


3094 


2476 


2062 


375 


156.0 


22,110 


1 1 ,055 


7370 


5528 


4422 


3683 



Size of 



Flow at 



Maximum Allowable Horizontal Projected Roof Areas 



3 ipe, 


20 mm/m Slope, 


Square 1 


Meters at Various Rainfall Rates 




mm 


Us 


















25mm/hr 


50mm/hr 


75mm/hr 


100mm/hr 


125mm/hr 


150mm/ 


75 


3.0 


431 


216 


144 


108 


86 


72 


100 


6.9 


985 


492 


328 


246 


197 


164 


125 


12.4 


1754 


877 


585 


438 


351 


292 


150 


19.8 


2806 


1403 


935 


701 


561 


468 


200 


42.7 


6057 


3029 


2019 


1514 


1211 


1009 


250 


76.6 


10,851 


5425 


3618 


2713 


2169 


1807 


300 


123.2 


17,465 


8733 


5816 


4366 


3493 


2912 


375 


220.2 


31,214 


15,607 


10,405 


7804 


6248 


5202 



Size of 



Flow at 



Pipe, 40 mm/m Slope, 



Maximum Allowable Horizontal Projected Roof Areas 
Square Meters at Various Rainfall Rates 



mm 



L/s 



25mm/hr 50mm/hr 75mm/hr 100mm/hr 125mm/hr 150mm/hr 



75 


4.3 


611 


305 


204 


153 


122 


102 


100 


9.8 


1400 


700 


465 


350 


280 


232 


125 


17.5 


2482 


1241 


827 


621 


494 


413 


150 


28.1 


3976 


1988 


1325 


994 


797 


663 


200 


60.3 


8547 


4273 


2847 


2137 


1709 


1423 


250 


108.6 


15,390 


7695 


5128 


3846 


3080 


2564 


300 


174.6 


24,749 


12,374 


8250 


6187 


4942 


4125 


375 


312.0 


44,220 


22,110 


14,753 


1 1 ,055 


8853 


7367 



Notes: 

1 . The sizing data for horizontal piping is based on the pipes flowing full. 

2. For rainfall rates other than those listed, determine the allowable roof area by dividing the area given in the 
1 inch/hour (25 mm/hour) column by the desired rainfall rate. 



90 



STORM DRAINAGE 



Table 11-3 



TABLE 11-3 

Size of Gutters 



Diameter of Gutter 



in Inches 


M; 


aximum Rail 


ifall in Inch" 


es per Hou 


r 


1/1 6"/ft. Slope 


2 


3 


4 


5 


6 


3 


340 


226 


170 


136 


113 


4 


720 


480 


360 


288 


240 


5 


1250 


834 


625 


500 


416 


6 


1920 


1280 


960 


768 


640 


7 


2760 


1840 


1380 


1100 


918 


8 


3980 


2655 


1990 


1590 


1325 


10 


7200 


4800 


3600 


2880 


2400 



Diameter of Gutter 



in Inches 




Maximum Rainfall in Inches 


; per Hou 


r 


1/8"/ft. Slope 


2 


3 


4 


5 


6 


3 


480 


320 


240 


192 


160 


4 


1020 


681 


510 


408 


340 


5 


1760 


1172 


880 


704 


587 


6 


2720 


1815 


1360 


1085 


905 


7 


3900 


2600 


1950 


1560 


1300 


8 


5600 


3740 


2800 


2240 


1870 


10 


10,200 


6800 


5100 


4080 


3400 



Diameter of Gutter 
in Inches 



Maximum Rainfall in Inches per Hour 



1/4"/ft. Slope 


2 


3 


4 


5 


6 


3 


680 


454 


340 


272 


226 


4 


1440 


960 


720 


576 


480 


5 


2500 


1668 


1250 


1000 


834 


6 


3840 


2560 


1920 


1536 


1280 


7 


5520 


3680 


2760 


2205 


1840 


8 


7960 


5310 


3980 


3180 


2655 


10 


14,400 


9600 


7200 


5750 


4800 


Diameter of Gutter 










in Inches 




Maximum Rainfall in Inches per Hour 




1/2"/ft. Slope 


2 


3 


4 


5 


6 


3 


960 


640 


480 


384 


320 


4 


2040 


1360 


1020 


816 


680 


5 


3540 


2360 


1770 


1415 


1180 


6 


5540 


3695 


2770 


2220 


1850 


7 


7800 


5200 


3900 


3120 


2600 


8 


11,200 


7460 


5600 


4480 


3730 


10 


20,000 


13,330 


10,000 


8000 


6660 



91 



Table 11-3 (Metric) 



UNIFORM PLUMBING CODE 





TABLE 11-3 (Metric) 










Size of Gutters 






Diameter of 












Gutter in mm 


Maximum Rainfall in Millimeters per 


Hour 


5.2 mm/m Slope 


50.8 


76.2 


101.6 


127.0 


152.4 


76.2 


31.6 


21.0 


15.8 


12.6 


10.5 


101.6 


66.9 


44.6 


33.4 


26.8 


22.3 


127.0 


116.1 


77.5 


58.1 


46.5 


38.7 


152.4 


178.4 


119.1 


89.2 


71.4 


59.5 


177.8 


256.4 


170.9 


128.2 


102.2 


85.3 


203.2 


369.7 


246.7 


184.9 


147.7 


123.1 


254.0 


668.9 


445.9 


334.4 


267.6 


223.0 


Diameter of 












Gutter in mm 


Maximum Rainfall in Millimeters per 


Hour 


10.4 mm/m Slope 


50.8 


76.2 


101.6 


127.0 


152.4 


76.2 


44.6 


29.7 


22.3 


17.8 


14.9 


101.6 


94.8 


63.3 


47.4 


37.9 


31.6 


127.0 


163.5 


108.9 


81.8 


65.4 


54.5 


152.4 


252.7 


168.6 


126.3 


100.8 


84.1 


177.8 


362.3 


241.5 


181.2 


144.9 


120.8 


203.2 


520.2 


347.5 


260.1 


208.1 


173.7 


254.0 


947.6 


631.7 


473.8 


379 


315.9 


Diameter of 












Gutter in mm 


Maximum Rainfall in Millimeters per 


Hour 


20.9 mm/m Slope 


50.8 


76.2 


101.6 


127.0 


152.4 


76.2 


63.2 


42.2 


31.6 


25.3 


21.0 


101.6 


133.8 


89.2 


66.9 


53.5 


44.6 


127.0 


232.3 


155.0 


116.1 


92.9 


77.5 


152.4 


356.7 


237.8 


178.4 


142.7 


118.9 


177.8 


512.8 


341.9 


256.4 


204.9 


170.9 


203.2 


739.5 


493.3 


369.7 


295.4 


246.7 


254.0 


133.8 


891.8 


668.9 


534.2 


445.9 


Diameter of 












Gutter in mm 


Maximum Rainfall in Millimeters per 


Hour 


41 .7 mm/m Slope 


50.8 


76.2 


101.6 


127.0 


152.4 


76.2 


89.2 


59.5 


44.6 


35.7 


29.7 


101.6 


189.5 


126.3 


94.8 


75.8 


63.2 


127.0 


328.9 


219.2 


164.4 


131.5 


109.6 


152.4 


514.7 


343.3 


257.3 


206.2 


171.9 


177.8 


724.6 


483.1 


362.3 


289.9 


241.4 


203.2 


1040.5 


693.0 


520.2 


416.2 


346.5 


254.0 


1858.0 


1238.4 


929.0 


743.2 


618.7 



92 



STORM DRAINAGE 



1105.3-1108.1 



1105.3 Strainers for Flat Decks. Roof drain 
strainers for use on sun decks, parking decks, and 
similar areas which are normally serviced and 
maintained may be of the flat surface-type. Such roof 
drain strainers shall be level with the deck and shall 
have an available inlet area of no less than two (2) 
times the area of the conductor or leader to which 
the drain is connected. 

1105.4 Roof Drain Flashings. Connection between 
the roof and roof drains which pass through the roof 
and into the interior of the building shall be made 
watertight by the use of proper flashing material. 

1 1 05.4.1 Where lead flashing material is used, it 
shall be a minimum of four (4) pounds per 
square foot (19.5 kg/m 2 ). 

1105.4.2 Where copper flashing material is 
used, it shall be a minimum of twelve (12) 
ounces per square foot (3.7 kg/m 2 ). 

1106.0 Size of Leaders, Conductors, and Storm 
Drains 

1106.1 Vertical Conductors and Leaders. Vertical 
conductors and leaders shall be sized on the basis of 
the maximum projected roof area and Table 11-1. 

1106.2 Size of Horizontal Storm Drains and 
Sewers. The size of building storm drains or 
building storm sewers or any of their horizontal 
branches shall be based upon the maximum projected 
roof or paved area to be handled and Table 11-2. 

1106.3 Size of Roof Gutters. The size of 
semicircular gutters shall be based on the maximum 
projected roof area and Table 11-3. 

1106.4 Side Walls Draining onto a Roof. Where 
vertical walls project above a roof so as to permit 
storm water to drain to the roof area below the 
adjacent roof area may be computed from Table 11-1 
as follows: 

(1) For one (1) wall - add fifty (50) percent of 
the wall area to the roof area figures. 

(2) For two (2) adjacent walls - add thirty-five 
(35) percent of the total wall areas. 

(3) Two (2) walls opposite of same height - add 
no additional area. 

(4) Two (2) walls opposite of differing heights - 
add fifty (50) percent of wall area above top of 
lower wall. 

(5) Walls on three (3) sides - add fifty (50) 
percent of area of the inner wall below the top of 
the lowest wall, plus allowance the for area of wall 
above top of lowest wall, per (2) and (4) above. 

(6) Walls on four (4) sides - no allowance for 
wall areas below top of lowest wall - add for 



areas above the top of the lowest wall per (1), 
(2), (4) and (5) above. 

1107.0 Values for Continuous Flow 

Where there is a continuous or semi-continuous 
discharge into the building storm drain or building 
storm sewer, as from a pump, ejector, air- 
conditioning plant, or similar device, one (1) gpm 
(3.8 L/min.) of such discharge shall be computed as 
being equivalent to twenty-four (24) square feet (2.2 
m 2 ) of roof area, based upon a rate of rainfall of four 
(4) inches (102 mm) per hour. 

1108.0 Control led-Flow Roof Drainage 

1108.1 Application. In lieu of sizing the storm 
drainage system in accordance with Section 1106.0, 
the roof drainage may be sized on the basis of 
controlled flow and storage of the storm water on the 
roof, provided the following conditions are met: 

(1) The water from a 25-year frequency storm 
shall not be stored on the roof for more than 
twenty-four (24) hours. 

(2) During the storm, the water depth on the 
roof shall not exceed the depths specified in 
Table 11-4. 

TABLE 11-4 

Controlled Flow Maximum Roof Water Depth 

Roof Rise,* Max Water Depth at Drain, 

Inches (mm) Inches (mm) 

Flat (Flat) 3 (76) 

2 (51) 4 (102) 

4 (102) 5 (127s) 

6 (152) 6 (152) 

'Vertical measurement from the roof surface at the 
drain to the highest point of the roof surface served 
by the drain, ignoring any local depression 
immediately adjacent to the drain. 

(3) No less than two (2) drains shall be installed 
in roof areas of ten thousand (10,000) square feet 
(929.0 m 2 ) or less, and no less than one (1) 
additional drain shall be installed for each ten 
thousand (10,000) square feet (929.0 m 2 ) of roof 
area over ten thousand (10,000) square feet 
(929.0 m 2 ). 

(4) Each roof drain shall have a pre-calibrated, 
fixed (non-adjustable), and proportional weir 
(notched) in a standing water collar inside the 
strainer. No mechanical devices or valves shall 
be allowed. 



93 



1108.1 -1109.2 



UNIFORM PLUMBING CODE 



(5) Pipe sizing shall be based on the pre- 
calibrated rate of flow (gpm) of the pre- 
calibrated weir for the maximum allowable 
water depth, and Tables 11-1 and 11-2. 

(6) The height of stones or other granular 
material above the waterproofed surface shall 
not be considered in water depth measurement, 
and the roof surface in the vicinity of the drain 
shall not be recessed to create a reservoir. 

(7) Roof design, where controlled flow roof 
drainage is used, shall be such that the 
minimum design roof live load is thirty (30) 
pounds per square foot (146.5 kg/m 2 ) to provide 
a safety factor above the fifteen (15) pounds per 
square foot (73.2 kg/m 2 ) represented by the 
depth of water stored on the roof as indicated in 
Table 11-4. 

(8) Scuppers shall be provided in parapet walls. 
The distance of scupper bottoms above the roof 
level at the drains shall not exceed the maximum 
distances specified in Table 11-5. 

TABLE 11-5 

Distance of Scupper Bottoms Above Roof 



Roof Rise,* 
Inches (mm) 
Flat (Flat) 
2 (51) 

4 (102) 

6 (152) 



Maximum Distance of 
Scupper Bottom 

Above Roof Level at Drains, 

Inches (mm) 

3 (76.2) 

4 (102) 

5 (127.0) 

6 (152) 



*Vertical measurement from the roof surface at the 
drain to the highest point of the roof surface served 
by the drain, ignoring any local depression 
immediately adjacent to the drain. 

(9) Scupper openings shall be a maximum of 
one (1) inch (25.4 mm) high. A sufficient 
number of scuppers shall be provided so that 
the total scupper cross-sectional area is at least 
equal to that required for horizontal storm 
drains in Table 11-2 (column for half (1/2) inch 
(12.7 mm) slope). 

(10) Flashings shall extend above the top of the 
scuppers. 

(11) At any wall or parapet, forty-five (45) 
degree (0.79 rad) cants shall be installed. 

(12) Separate storm and sanitary drainage 
systems shall be provided within the building. 



(13) Calculations for the roof drainage system 
shall be submitted along with the plans to the 
Administrative Authority for approval. 

1108.2 Setback Roofs. Drains on setback roofs 
may be connected to the controlled flow drainage 
systems provided: 

(1 ) The setback is designed for storing water, or 

(2) The square footage of the setback drainage 
area is converted as outlined in Section 1108.0 to 
gpm, and the storm water pipe sizes in the 
controlled flow system are based on the sum of 
the loads. 

(3) The branch from each of the roof drains that 
are not provided with controlled flow shall be 
sized in accordance with Table 11-1. 

1109.0 Testing 

1109.1 Testing Required. New building storm 
drainage systems and parts of existing systems that 
have been altered, extended or repaired shall be 
tested as described in Section 1109.2.1 to disclose 
leaks and defects. 

1109.2 Methods of Testing Storm Drainage 
Systems. Except for outside leaders and perforated 
or open jointed drain tile, the piping of storm drain 
systems shall be tested upon completion of the rough 
piping installation by water or air, and proved tight. 
The Administrative Authority may require the 
removal of any cleanout plugs to ascertain if the 
pressure has reached all parts of the system. Either of 
the following test methods shall be used: 

1109.2.1 Water Test. After piping has been 
installed, the water test shall be applied to the 
drainage system, either in its entirety or in 
sections. If applied to the entire system, all 
openings in the piping shall be tightly closed 
except for the highest opening, and the system 
shall be filled with water to the point of 
overflow. If the system is tested in sections, each 
opening shall be tightly plugged except for the 
highest opening of the section under test, and 
each section shall be filled with water, but no 
section shall be tested with less than a ten (10) 
foot (3048 mm) head of water. In testing 
successive sections, at least the upper ten (10) 
foot (3048 mm) of the next preceding section 
shall be tested so that no joint of pipe in the 
building (except the uppermost ten (10) foot 
(3048 mm) of a roof drainage system, which 
shall be filled with water to the flood level of the 
uppermost roof drain) shall have been 
submitted to a test of less than a ten (10) foot 
(3048 mm) head of water. The water shall be 
kept in the system or in the portion under test 



94 



STORM DRAINAGE 1 1 09.2 

for at least fifteen (15) minutes before inspection 
starts; the system shall then be tight at all points. 

1 1 09.2.2 Air Test. The air test shall be made by 
attaching an air compressor testing apparatus to 
any suitable opening after closing all other inlets 
and outlets to the system, forcing air into the 
system until there is a uniform gage pressure of 
five (5) psi (34.5 kPa) or sufficient to balance a 
column of mercury ten (10) inches (254 mm) in 
height. This pressure shall be held without 
introduction of additional air for a period of at 
least fifteen (15) minutes. Schedule 40 plastic 
DWV systems shall not be tested by the air test 
method. 

1109.2.3 Exceptions. When circumstances 
exist that make air and water tests, described in 
Sections 1109.2.1 and 1109.2.2 above, impractical, 
and for minor maintenance, repairs and 
installations, the Administrative Authority may 
perform the inspection as considered advisable 
by said authority to assure that the work has 
been in accordance with provisions of this Code. 



95 



UNIFORM PLUMBING CODE 



^ 



96 



CHAPTER 12 

FUEL PIPING 



1201.0 General 

The regulations of this chapter shall govern the 
installation of all fuel gas piping in or in connection 
with any building or structure or within the property 
lines of any premises, other than service pipe. 

1202.0 Definitions 

For the purposes of this Code, certain terms, phrases, 
words, and their derivatives shall be interpreted as 
set forth in this section, provided, however, that 
whenever the words "gas meters" appear, they shall 
be construed to also mean valves and those devices 
required for the regulation of pressure and the 
measurement of natural gas being dispensed for any 
building, structure, or premises. 

1 202.1 Appliance Fuel Connector - An assembly of 
listed semi-rigid or flexible tubing and fittings to 
carry fuel between a fuel piping outlet and a fuel 
burning appliance. 

1202.2 Approved - As to materials, workmanship, 
and types of construction, means approved by the 
Administrative Authority as the result of 
investigation, inspection, or test conducted by them 
or by reason of accepted principles or tests by other 
recognized testing agency or authority. 

1202.3 Fuel Gas - Natural, manufactured, liquified 
petroleum, or a mixture of these. 

1202.4 Gas Piping - Any installation of pipe, 
valves, or fittings that is used to convey fuel gas, 
installed on any premises or in any building, but 
shall not include: 

(1) Any portion of the service piping. 

(2) Any approved piping connection six (6) feet 
(1829 mm) or less in length between an existing 
gas outlet and a gas appliance in the same room 
with the outlet. 

1 202.5 Gas Piping System - Any arrangement of 
gas piping supplied by one (1) meter and each 
arrangement of gas piping serving a building, 
structure, or premises, whether individually metered 
or not. 

1202.6 Reserved 

1202.7 Liquified Petroleum Gas (LPG) Facilities - 

Liquified petroleum gas (LPG) facilities means tanks, 
containers, container valves, regulating equipment, 
meters, and /or appurtenances for the storage and 
supply of liquified petroleum gas for any building, 
structure or premises. 



1202.8 Quick-Disconnect Device - A hand- 
operated device which provides a means for 
connecting and disconnecting an appliance or an 
appliance connector to a gas supply and which is 
equipped with an automatic means to shut off the 
gas supply when the device is disconnected. 

1 202.9 Service Piping - The piping and equipment 
between the street gas main and the gas piping 
system inlet, which is installed by and is under the 
control and maintenance of the serving gas supplier. 

1202.10 Transition Gas Riser - Any listed or 
approved section or sections of pipe and fittings 
used to convey fuel gas and installed in a gas piping 
system for the purpose of providing a transition 
from below ground to above ground. 

1203.0 Workmanship 

No gas piping shall be strained or bent and no 
appliance shall be supported by or develop any 
strain or stress on its supply piping. Gas piping 
supplying appliances designed to be supported by 
the piping may be used to support such appliances, 
when first approved by the Administrative 
Authority. 

1204.0 Inspection 

1204.1 Upon completion of the installation, 
alteration, or repair of any gas piping, and prior to 
the use thereof, the Administrative Authority shall 
be notified that such gas piping is ready for 
inspection. 

1 204.2 All excavations required for the installation 
of underground piping shall be kept open until such 
time as the piping has been inspected and approved. 
If any such piping is covered or concealed before 
such approval, it shall be exposed upon the direction 
of the Administrative Authority. 

1204.3 The Administrative Authority shall make the 
following inspections and shall either approve that 
portion of the work as completed, or shall notify the 
permit holder wherein the same fails to comply with 
this Code. 

1204.3.1 Rough Piping Inspection 

This inspection shall be made after all gas piping 
authorized by the permit has been installed, and 
before any such piping has been covered or 
concealed, or any fixture or appliance has been 
attached thereto. This inspection shall include a 



97 



1204.3-1208.0 



UNIFORM PLUMBING CODE 



determination that the gas piping size, material, 
and installation meet the requirements of this 
Code. 

1204.3.2 Final Piping Inspection 

This inspection shall be made after all piping 
authorized by the permit has been installed and 
after all portions thereof which are to be covered 
or concealed are so concealed and before any 
fixtures, appliance, or shutoff valve has been 
attached thereto. This inspection shall include an 
air, CO2 or nitrogen pressure test, at which time 
the gas piping shall stand a pressure of not less 
than ten (10) pounds per square inch (68.9 kPa) 
gauge pressure, or at the discretion of the 
Administrative Authority, the piping and valves 
may be tested at a pressure of at least six (6) 
inches (152 mm) of mercury, measured with a 
manometer or slope gauge. Test pressures shall 
be held for a length of time satisfactory to the 
Administrative Authority, but in no case for less 
than fifteen (15) minutes, with no perceptible 
drop in pressure. For welded piping, and for 
piping carrying gas at pressures in excess of 
fourteen (14) inches (356 mm) water column 
pressure, the test pressure shall not be less than 
sixty (60) pounds per square inch (413.4 kPa) 
and shall be continued for a length of time 
satisfactory to the Administrative Authority, but 
in no case for less than thirty (30) minutes. These 
tests shall be made using air, C0 2 , or nitrogen 
pressure only and shall be made in the presence 
of the Administrative Authority. All necessary 
apparatus for conducting tests shall be furnished 
by the permit holder. Test gauges used in 
conducting tests shall comply with Section 319.0, 
Test Gauges. 

1204.4 In cases where the work authorized by the 
permit consists of a minor installation of additional 
piping to piping already connected to a gas meter, 
the foregoing inspections may be waived at the 
discretion of the Administrative Authority. In this 
event, the Administrative Authority shall make such 
inspection as deemed advisable in order to be 
assured that the work has been performed in 
accordance with the intent of this Code. 

1205.0 Certificate of Inspection 

1205.1 If, upon final piping inspection, the 
installation is found to comply with the provisions of 
this Code, a certificate of inspection may be issued 
by the Administrative Authority. 

1205.2 A copy of the certificate of such final piping 
inspection shall be issued to the serving gas supplier 
supplying gas to the premises. 



1205.3 It shall be unlawful for any serving gas 
supplier, or person furnishing gas, to turn on, or 
cause to be turned on, any fuel gas or any gas meter 
or meters, until such certificate of final inspection, as 
herein provided, has been issued. 

1206.0 Authority to Render Gas Service 

1206.1 It shall be unlawful for any person, firm, or 
corporation, excepting an authorized agent or 
employee of a person, firm, or corporation engaged 
in the business of furnishing or supplying gas and 
whose service pipes supply or connect with the 
particular premises, to turn on or reconnect gas 
service in or on any premises where and when gas 
service is, at the time, not being rendered. 

1206.2 It shall be unlawful to turn on or connect gas 
in or on any premises unless all outlets are properly 
and securely connected to gas appliances or capped 
or plugged with screw joint fittings. 

1207.0 Authority to Disconnect 

1207.1 The Administrative Authority or the serving 
gas supplier is hereby authorized to disconnect any 
gas piping or appliance, or both, which shall be 
found not to conform to the requirements of this 
Code or which may be found defective and in such 
condition as to endanger life or property. 

1207.2 Where such disconnection has been made, a 
notice shall be attached to such gas piping or 
appliance, or both, which shall state the same has 
been disconnected, together with the reasons 
therefor. 

1207.3 It shall be unlawful to remove or disconnect 
any gas piping or gas appliance without capping or 
plugging with a screw joint fitting the outlet from 
which said pipe or appliance was removed. All 
outlets to which gas appliances are not connected 
shall be left capped gastight on any piping system 
which has been installed, altered, or repaired. 

Exception: When an approved listed quick- 
disconnect device is used. 

1208.0 Temporary Use of Gas 

Where temporary use of gas is desired and the 
Administrative Authority deems the use necessary, a 
permit may be issued for such use for a period of 
time not to exceed that designated by the 
Administrative Authority, provided that such gas 
piping system otherwise conforms to the 
requirements of this Code regarding material, sizing, 
and safety. 



98 



FUEL PIPING 



1209.0-1211.5 



1209.0 Gas Meter Locations 

1209.1 All gas meter locations shall be approved by 
the Administrative Authority and the serving gas 
supplier. 

1209.2 Where more than one (1) meter is set on a 
particular premises, they shall all be set at one (1) 
location, except where this is impractical. In multiple 
meter installations, each separate gas piping system 
shall be identified by the permittee in a manner 
satisfactory to the serving gas supplier serving the gas. 

1209.3 All gas meters shall be preceded by a main 
supply shutoff valve and shall be so placed as to be 
at all times readily accessible for inspection, reading, 
testing, and shutting off the gas supply. All service 
piping or main supply shutoff valves must be 
outside of the building and readily accessible. 

1209.4 In order that gas may be supplied, the gas 
piping inlet shall be located with respect to the 
proposed meter location, in accordance with the 
local serving gas supplier instructions. 

1209.5 Access to enclosed gas meters, except those 
located in an approved vault supplied by the serving gas 
supplier, shall be through an opening or door not less in 
size than twenty-two (22) inches (559 mm) by twenty- 
four (24) inches (610 mm), but in no event smaller than 
that specified by the local serving gas supplier. 

1 209.6 Gas meters shall not be located under a 
show window or under interior stairways or in 
engine, boiler, heater, or electric meter rooms. Where 
not prohibited by other regulation, gas meters may 
be located in the open under exterior stairways. 

1210.0 Material for Gas Piping 

1210.1 All pipe used for the installation, extension, 
alteration, or repair of any gas piping shall be 
standard weight wrought iron or steel (galvanized or 
black) or yellow brass (containing not more than 
seventy-five (75) percent copper). Approved PE pipe 
may be used in exterior buried piping systems. 

1210.2 All such pipe shall be either new, or shall 
previously have been used for no other purpose than 
conveying gas; it shall be in good condition and free 
from internal obstructions. Burred ends shall be 
reamed to the full bore of the pipe. 

1210.3 All fittings used in connection with the 
above piping shall be of malleable iron, yellow brass 
(containing not more than seventy-five (75) percent 
copper), or approved plastic fittings. 

1210.4 All valves and appurtenances used in 
connection with the above piping shall be of a type 
designed and approved for use with fuel gas. 

1210.5 Valves up to and including two (2) inches 
(51 mm) shall be brass or other approved material. 



1211.0 Installation of Gas Piping 

1211.1 All joints in the piping system, unless 
welded, shall be screwed joints, having approved 
standard threads. Such screwed joints shall be made 
up with approved pipe joint material, insoluble in 
the presence of fuel gas and applied to the male 
threads only. 

1211.2 All welded joints in the piping system shall 
be welded by a certified pipe welder as defined in 
Chapter 2 (see Welder, Pipe). 

1 21 1 .3 No gas piping shall be installed in or on the 
ground under any building or structure unless 
installed in gastight conduit, and all exposed gas 
piping shall be kept at least six (6) inches (152 mm) 
above grade or structure. The term "building or 
structure" shall include structures such as porches 
and steps, whether covered or uncovered, 
breezeways, roofed porte-cocheres, roofed patios, 
carports, covered walks, covered driveways, and 
similar structures or appurtenances. 

The conduit shall be of material approved for 
installation underground beneath buildings and not 
less than Schedule 40 pipe. The interior diameter of 
the conduit shall be not less than one-half (1/2) inch 
(12.7 mm) larger than the outside diameter of the gas 
piping. 

The conduit shall extend to a point at least 
(12) inches (305 mm) beyond any area where it is 
required to be installed or to the outside wall of a 
building, and the outer ends shall not be sealed. 
Where the conduit terminates within a building, it 
shall be readily accessible and the space between 
the conduit and the gas piping shall be sealed to 
prevent leakage of gas into the building. 

Concealed unprotected gas piping may be 
installed above grade in approved recesses or 
channels. 

Exception: When necessary due to structural 
conditions, approved type gas piping may be 
installed in other locations, when permission has 
first been obtained from the Administrative 
Authority. 

1 21 1 .4 Where water vapor is present in the fuel gas 
served, accessible drip pipes shall be provided at 
points where condensation will tend to collect. 

1211.5 Ferrous gas piping installed underground in 
exterior locations shall be protected from corrosion 
by approved coatings or wrapping materials or by 
any other approved manner. All horizontal metallic 
piping shall have at least twelve (12) inches (305 m m) 
of earth cover or other equivalent protection. Plastic 
gas piping shall have at least eighteen (18) inches (457 
mm) of earth cover or other equivalent protection. 
Risers, including prefabricated risers inserted with 



99 



1211.5-1211.16 



UNIFORM PLUMBING CODE 



plastic pipe, shall be metallic and shall be wrapped or 
coated to a point at least six (6) inches (152 mm) 
above grade or protected in an approved manner. 
When a riser connects underground to plastic pipe, 
the underground horizontal metallic portion of the 
riser shall extend at least thirty (30) inches (762 mm) 
before connecting to the plastic pipe by means of an 
approved transition fitting or adapter. 

Exception: Listed one-piece ninety (90) degree 
(1.6 rad) transition fittings or risers may have 
less than thirty (30) inches (762 mm) of 
horizontal metallic piping. 

1 21 1 .6 Underground ferrous gas piping shall be 
electrically isolated from the rest of the gas system 
with listed or approved isolation fittings installed a 
minimum of six (6) inches (152 mm) above grade. 

1211.7 All gas pipe protective coatings shall be 
approved types, machine applied, and conform to 
recognized standards. Field wrapping shall provide 
equivalent protection and is restricted to those 
fittings and short sections where the factory wrap 
has been damaged or necessarily stripped for 
threading or welding (see Appendix I, IS-13). Zinc 
coatings (galvanizing) shall not be deemed adequate 
protection for gas piping below ground. Ferrous 
metals in exposed exterior locations shall be 
protected from corrosion in a manner satisfactory to 
the Administrative Authority. 

Protectively coated pipe shall be inspected and 
tested and any visible void, damage or imperfection 
to the pipe coating shall be repaired to comply with 
Section 313.0 (see Appendix I, IS-13). 

121 1 .8 All gas piping shall be adequately supported 
by metal straps or hooks at intervals not to exceed 
those shown in Table 12-2. Gas piping installed 
below grade shall be effectively supported at all 
points on undisturbed or well compacted soil or 
sand. 

1211.9 Gas piping supplying more than one (1) 
building on any one (1) premises shall be equipped 
with separate shutoff valves to each building, so 
arranged that the gas supply can be turned on or off 
to any individual or separate building. Such shutoff 
valve shall be located outside the building it supplies 
and shall be readily accessible at all times. Buildings 
accessory to single family residences are exempt 
from the requirements of this subsection. 

1211.10 Where unions are necessary, right and left 
nipples and couplings shall be used. Ground-joint 
unions may be used at exposed fixture, appliance, or 
equipment connections and in exposed exterior 
locations immediately on the discharge side of a 
building shutoff valve. Heavy duty flanged type 
unions may be used in special cases, when first 



approved by the Administrative Authority. Bushings 
shall not be used in concealed locations. 

1211.11 When air, oxygen, or other special 
supplementary gas under pressure is introduced 
with the regularly supplied gas, either directly into 
the gas piping system or at burners, a device 
approved by the Administrative Authority and the 
serving gas supplier shall be installed to prevent 
backflow of such special gas into the gas piping 
system or serving gas supplier's meter. This device 
shall be located between the source of the special gas 
and the serving gas supplier's meter and shall be on 
the gas line leading to die appliance using the special 
gas. This device may be either a spring loaded or 
diaphragm type check valve and shall be capable of 
withstanding any pressure which may be imposed 
on it 

1211.12 When liquified petroleum or other standby 
gas is interconnected with the regular gas piping 
system, an approved three-way two-port valve or 
other adequate safeguard acceptable to the 
Administrative Authority and the serving gas 
supplier shall be installed to prevent backflow into 
either supply system. 

1211.13 Valves used in connection with gas piping 
shall be approved types and shall be accessible. 

1211.14 All gas outlets located in a barbecue or 
fireplace shall be controlled by an approved 
operating valve located in the same room and 
outside the hearth, but not more than four (4) feet 
(1219 mm) from such outlets. When piping on the 
discharge side of any such control valve is standard 
weight brass or galvanized steel, such piping may be 
embedded in or surrounded by not less than two (2) 
inches (51 mm) of concrete or masonry. 

1211.15 An accessible shutoff valve of a type set 
forth in Section 1211.13, shall be installed in the fuel 
supply piping outside of each appliance and ahead 
of the union connection thereto, and in addition to 
any valve on the appliance. Shutoff valves shall be 
within three (3) feet (914 mm) of the appliance it 
serves, and in the same room or space where the 
appliance is located. 

Shutoff valves may be located immediately 
adjacent to and inside or under an appliance when 
placed in an accessible and protected location and 
when such appliance may be removed without 
removal of the valve. 

Shutoff valves may be accessibly located inside 
wall heaters and wall furnaces listed for recessed 
installation where necessary maintenance can be 
performed without removal of the shutoff valve. 

1211.16 An electrically continuous insulated 
number 18 AWG yellow 0.040 inch (1 mm) diameter | 



100 



FUEL PIPING 



1211.16-1213.6 



copper tracer wire or other approved materials shall 
be installed with and attached to underground non- 
metallic gas piping and shall terminate above grade 
at each end. 

1211.17 Changes in direction of gas piping shall be 
made by appropriate use of fittings, except PE gas pipe 
and tubing may be bent to a radius of not less than 
twenty (20) times the nominal pipe or tubing diameter. 

1212.0 Appliance Connectors 

Appliance connections shall at no time, have a 
diameter less than that of the inlet connection to the 
appliance as provided by the manufacturer and each 
appliance shall be rigidly connected to the gas piping 
with materials as provided in Section 1210.0. 

Exception: A gas appliance may be connected 
with an approved listed metal appliance 
connector under the following conditions: 

(1) Listed metal appliance connectors shall have 
an overall length of not to exceed three (3) feet 
(914 mm) except a range or dryer connector, 
which may not exceed six (6) feet (1829 mm). 

(2) No part of such connector shall be concealed 
within or extended through any wall, floor, 
partition, or appliance housing. 

(3) A listed accessible appliance connector 
valve not less than the nominal size of the 
connector shall be provided at the gas piping 
outlet immediately ahead of the connector 

(4) All connectors shall be of such size as to 
provide the total demand of the connected 
appliance based on the applicable Tables 12-9 or 
12-10. 

(5) Aluminum alloy connectors may be used 
only in interior locations where they shall not be 
in contact with masonry, plaster, or insulation or 
are not subject to repeated corrosive wettings. 

(6) The connection of an indoor appliance with 
any type of gas hose is prohibited, except when 
used with laboratory or shop equipment or 
equipment that requires mobility during 
operation. Such connections shall have the shut- 
off or stopcock installed at the connection to the 
building piping. When gas hose is used, it shall 
be of the minimum practical length, but not to 
exceed six (6) feet (1829 mm), except for hand 
torches and special mobile equipment, and shall 
not extend from one room to another nor pass 
through any walls, partitions, ceilings, or floors. 
Under no circumstances shall gas hose be 
concealed from view or used in a concealed 
location. Only listed gas hose shall be used and 
only in accordance with its listing. Gas hose shall 



not be used where it is likely to be subjected to 
excessive temperatures (above 125°F [51.7°C]) 
nor shall it be used as a substitute for a standard 
appliance connector. 

(7) Outdoor portable appliances may be 
connected with an approved outdoor hose 
connector not to exceed fifteen (15) feet (4572 
mm) in length provided it connects outdoors to 
approved gas piping including an approved 
valve at the inlet of the hose connector. 

(8) Appliances may be connected to the fuel gas 
piping by means of an approved listed quick- 
disconnect device. 



1213.0 Liquified Petroleum Gas Facilities and 
Piping 

In addition to the requirements of this Code for gas 
piping, the facilities and piping for use with liquified 
petroleum gas shall meet the following 
requirements: 

1213.1 All liquified petroleum gas facilities shall 
conform to approved standards (see Table 14-1). All 
such facilities and their locations shall be acceptable 
to the Administrative Authority and shall conform to 
state and local fire prevention regulations. 

1213.2 Where liquified petroleum gas facilities 
serve more than one (1) customer through separate 
piping systems, each system shall be identified in a 
manner satisfactory to the Administrative Authority 
and the gas supplier. 

1213.3 All liquified petroleum gas facilities shall be 
so placed as to be at all times readily accessible for 
inspection, reading, testing, and shutting off the gas 
supply. All service piping and main supply shutoff 
valves shall be outside of the building. All main 
supply valves shall be of approved type and readily 
accessible. 

1213.4 In order that gas may be supplied, the gas 
piping inlet shall be located with respect to the 
proposed liquified petroleum gas facility location in 
accordance with the requirements of this section and 
the supplier's instructions. 

1 21 3.5 Liquified petroleum gas facilities shall not be 
located in any pit or basement, under show windows 
or interior stairways, in engine, boiler, heater, or 
electric meter rooms. When not prohibited by 
another regulation, approved liquified petroleum 
gas metering devices may be located in the open 
under exterior stairways. 

1213.6 Liquified petroleum gas piping shall not 
serve any gas water heater located in a pit or 
basement where heavier than air gas might collect to 
form a flammable mixture. 



101 



1213.7-1217.2 



UNIFORM PLUMBING CODE 



1213.7 Pipe joint compounds used on thread 
connections shall be insoluble in liquified petroleum 
gas. 

1 21 3.8 Every valve and appurtenance used on such 
piping shall be designed and approved for use with 
liquified petroleum gas. 

1213.9 Discharge from relief valves shall be into 
open air and shall not be less than five (5) feet (1524 
mm) horizontally away from any opening into a 
building which is below such discharge. 

1214.0 Leaks 

1214.1 Leaks in gas piping shall be located by 
applying soapy water to the exterior of the piping. 

1214.2 Fire or acid shall not be used to locate or 
repair leaks, nor shall any substance other than air, 
carbon dioxide or nitrogen be introduced into the 
gas piping. 

1 21 4.3 It shall not be permissible to repair defects in 
gas piping or fittings, but upon having been located, 
the defective pipe or fitting shall be removed and 
replaced with sound material. 

1215.0 Interconnections of Gas Piping Systems 

1215.1 It shall be unlawful to connect any gas 
appliance in such a manner that such appliance may 
receive gas from more than one (1) system of gas 
piping. 

1215.2 The installation, use, or maintenance of a gas 
valve which makes it possible to turn on, control, or 
otherwise direct the flow of gas from one (1) system 
of gas piping to another, where such systems are 
supplied with gas from separate meters, is hereby 
prohibited, and any such valves or other 
interconnection between separate systems of gas 
piping shall be removed upon order of the 
Administrative Authority. 

1216.0 Required Gas Supply 

1216.1 The following regulations, as set forth in this 
section and in Section 1217.0, Required Gas Piping 
Size, shall be the standard for the installation of gas 
piping. All natural gas regulations and tables are 
based on the use of gas having a specific gravity of 
sixty hundredths (0.60), supplied at six (6) to eight 
(8) inches (152-203 mm) water column pressure at 
the outlet of the meter. For undiluted liquified 
petroleum gas, gas piping may be sized for 2500 Btu 
per cubic foot (25.9 Watt-hours /L) at eleven (11) 
inches (279 mm) water column and specific gravity 
of one and fifty-two hundredths (1.52). 

Note: Where gas of a different specific gravity is 



to be delivered, the serving gas supplier should 
be contacted for specific gravity conversion 
factors to use in sizing piping systems from the 
pipe sizing tables in this chapter. 

1216.2 The hourly volume of gas required at each 
piping outlet shall be taken as not less than the 
maximum hourly rating as specified by the 
manufacturer of the appliance or appliances to be 
connected to each such outlet. 

1216.3 Where the gas appliances to be installed 
have not been definitely specified, Table 12-1 may be 
used as a reference to estimate requirements of 
typical appliances. 

To obtain the cubic feet per hour (L/sec.) of gas 
required, divide input of appliances by the average 
Btu (W) heating value per cubic foot (L) of the gas. 
The average Btu (W) per cubic foot (L) of the gas in 
the area of the installation may be obtained from the 
serving gas supplier. 

1 21 6.4 The size of the supply piping outlet for any 
gas appliance shall not be less than one-half (1/2) 
inch (12.7 mm). 

The minimum size of any piping outlet for a mobile 
home shall be three-quarter (3/4) inch (19.1 mm). 

1217.0 Required Gas Piping Size 

1217.1 Where the maximum demand does not 
exceed two hundred fifty (250) cubic feet per hour (2 
L/sec.) and the maximum length of piping between 
the meter and the most distant outlet is not over two 
hundred fifty (250) feet (76200 mm), the size of each 
section and each outlet of any system of gas piping 
shall be determined by means of Table 12-3. Other 
systems within the range of Table 12-3 may be sized 
from that table or by means of the methods set forth 
in Section 1217.3. 

1217.2 To determine the size of each section of pipe 
in any system within the range of Table 12-3, 
proceed as follows: 

(1) Measure the length of the pipe from the gas 
meter location to the most remote outlet on the 
system. 

(2) In Table 12-3 select the column showing that 
distance, or the next longer distance if the table 
does not give the exact length. 

(3) Starting at the most remote outlet, find in 
the vertical column just selected the gas demand 
for that outlet. If the exact figure of demand is 
not shown, choose the next larger figure below 
in the column. 

(4) Opposite this demand figure, in the first 
column at the left in Table 12-3 will be found the 
correct size of pipe. 



102 



FUEL PIPING 



1217.2-1218.7 



(5) Using this same vertical column, proceed in a 
similar manner for each section of pipe serving 
this outlet. For each section of pipe, determine the 
total gas demand supplied by that section. Where 
gas piping sections serve both heating and 
cooling equipment and the installation prevents 
both units from operating simultaneously, only 
the larger of the two demand loads need be used 
in sizing these sections. 

(6) Size each section of branch piping not 
previously sized by measuring the distance from 
the gas meter location to the most remote outlet 
in that branch and follow the procedures of 
steps 2, 3, 4, and 5 above. 

Note: Size branch piping in the order of their 
distance from the meter location, beginning with 
the most distant outlet not previously sized. 

1217.3 For conditions other than those covered by 
Section 1217.1, such as longer runs or greater gas 
demands, the size of each gas piping system shall be 
determined by standard engineering methods 
acceptable to the Administrative Authority and each 
such system shall be so designed that the total 
pressure drop between the meter or other point of 
supply and any outlet when full demand is being 
supplied to all outlets, will at no time exceed five- 
tenths (0.5) inches (12.7 mm) water column pressure. 

1217.4 Where the gas pressure may be higher than 
fourteen (14) inches (356 mm) or lower than six (6) 
inches (152 mm) of water column, or when diversity 
demand factors are used, the design, pipe, sizing, 
materials, location, and use of such systems first shall 
be approved by the Administrative Authority. Piping 
systems designed for pressures higher than the 
serving gas supplier's standard delivery pressure shall 
have prior verification from the gas supplier of the 
availability of the design pressure. Systems using 
undiluted liquified petroleum gas may be sized using 
Table 12-7 for eleven (11) inches (279 mm) water 
column and in accordance with the provisions of 
Sections 1217.1 and 1217.2. 

1218.0 Medium Pressure Gas Piping Systems 

1218.1 Medium Pressure - Pressure over fourteen 
(14) inches (356 mm) of water column but not to 
exceed five (5) psig (34.5 kPa). Second stage pressure 
- used in liquified petroleum gas systems. Pressure 
over fourteen (14) inches (356 mm) of water column 
but not to exceed twenty (20) psig (137.8 kPa). 

1218.2 Approval of the Administrative Authority 
and verification from the serving gas supplier of the 
availability of the desired pressure shall be obtained 
before any medium pressure gas piping system is 
installed. 



1218.3 The following shall apply to medium 
pressure gas piping systems in addition to the other 
requirements of this chapter. 

1218.4 Approved regulators shall be installed on 
medium pressure gas piping systems, in approved 
locations and shall be accessible for servicing. Each 
regulator shall have a separate vent to the outside. 

Exceptions: Pounds (kg) to inches (mm) water 
column regulators equipped with limiting 
orifices capable of releasing not more than five 
(5) cubic feet of gas per hour (0.04 L/sec), when 
supplied with medium pressure, need not be 
vented to an outside location when such 
regulators have been approved by the 
Administrative Authority and the serving gas 
supplier. These regulators shall: 

(1) Be connected to the same piping material 
used to pipe the structure. A listed gas connector 
may be used to attach the low pressure piping 
downstream of the regulator to the appliance 
manifold. 

(2) Have an approved gas valve in the supply 
line upstream of the pounds (kg) to inches (mm) 
water column regulator. 

(3) Be accessible. 

(4) Have the upstream pressure identified. Such 
identification shall be a metal tag permanently 
attached to the regulator and state: "Warning: 
1/2 to 5 pounds (3.4-34.5 kPa) natural gas 
pressure. DO NOT REMOVE". 

(5) Be installed in a location that communicates 
with a ventilated area. 

1218.5 An approved gas valve shall be installed 
immediately preceding each regulator. All regulators 
that may be subjected to mechanical damage shall be 
substantially protected to the satisfaction of the 
Administrative Authority. 

1218.6 Tables 12-5 and 12-6 may be used to size 
natural gas piping system carrying three (3) or five (5) 
psig (20.7 or 34.5 kPa) gas. The procedure to 
determine the size of each section of the system is 
similar to that contained in Section 1217.0 using the 
pipe length from the meter to the most remote 
regulator on the medium pressure system and sizing 
the downstream low pressure piping from Table 12-3. 

1218.7 Table 12-8 may be used to size undiluted 
liquified petroleum gas piping systems carrying ten 
(10) psig (68.9 kPa) gas. The procedure to determine 
the size of each section of the system is similar to 
Section 1217.0 using the pipe length from the first 
stage or tank regulator to the most remote regulator 
in the second state system. Low pressure piping to 
be sized from Table 12-7. 



103 



1218.8 -Example 



UNIFORM PLUMBING CODE 



1 21 8.8 Buried medium pressure gas piping shall be 
protected from corrosion as required by Chapter 12 
and shall have a minimum earth cover of eighteen 
(18) inches (457 mm). Such piping shall be covered 



with at least six (6) inches (152 mm) of hand placed 
selected backfill devoid of rocks, building materials, 
or other matter that may damage the pipe or 
wrapping. 



Example Illustrating Use of Tables 12-1 and 12-3 

Problem: Determine the required pipe size of each section and outlet of the piping system shown in Figure 
1. Gas to be used has a specific gravity of sixty hundredths (0.60) and eleven hundred (11 00) Btu per cubic 
foot (1 1 .4 W/L), delivered at eight (8) inch (203 mm) water column pressure. 



Figure 1 



Section 3 

20' 

-(6096 mm)- 



Gas Meter 



150,000 Btu/hr 
• {43,950 W/hr) 
Furnace 



m 

H 

Section 2 Section 1 > 
10' 10' 

_(3048 mm)J3048 mm)_ 



30 gallon (113.6 I) 
Automatic 
Water Heater 



3 " 
3 



3 
3 



Gas 
Refrigerator 



Range 

Solution: 

(1) Maximum gas demand of outlet A — 

27 cubic feet per hour (0.21 L/sec.) (from Table 12-1). 

Maximum gas demand of outlet B — 

3 cubic feet per hour (0.02 Usee.) (from Table 12-1). 

Maximum gas demand of outlet C — 

59 cubic feet per hour (0.46 L/sec.) (from Table 12-1). 

Maximum gas demand of outlet D — 

136 cubic feet per hour (1 .1 L/sec.) (150,000 Btu/hour [43,950 W/hr.]) 
divided by 1 1 00 Btu per cubic foot (1 1 .4 W/L) 

(2) The length of pipe from the gas meter to the most remote outlet (outlet A) is 60 feet (18288 mm). 

(3) Using the column marked 60 feet (18288 mm) in Table 12-3: 

Outlet A, supplying 27 cubic feet per hour (0.21 L/sec), requires one-half (1/2) inch (12.7 mm) pipe. 

Section 1 , supplying outlets A and B, or 30 cubic feet per hour (0.24 L/sec.) requires one-half (1/2) inch 

(12.7 mm) pipe. 

Section 2, supplying outlets A, B, and C, or 89 cubic feet per hour (0.7 L/sec.) requires three-quarter (3/4) 

inch (19.1 mm) pipe. 

Section 3, supplying outlets A, B, C, and D, or 225 cubic feet per hour (1 .8 L/sec), requires one (1) inch 

(25.4 mm) pipe. 

(4) Using the column marked 60 feet (18288 mm) in Table 12-3 (no column for actual length of 55 feet (16764 
mm):Outlet B supplying 3 cubic feet per hour (0.02 L/sec), requires one-half (1/2) inch (12.7 mm) pipe. 
Outlet C, supplying 59 cubic feet per hour (0.46 L/sec), requires one-half (1/2) inch (12.7 mm) pipe. 

(5) Using the column marked 50 feet (15240 mm) in Table 12-3: 

Outlet D, supplying 136 cubic feet per hour (1 .1 L/sec), requires three-quarter (3/4) inch (19.1 mm) pipe. 



104 



FUEL PIPING Tables 1 2-1 & 1 2-2 

TABLE 12-1 

Minimum Demand of Typical Gas Appliances in Btus (Watts) Per Hour 

Demand in 

Appliance Btu/h Watts/h 

Barbecue (residential) 50,000 14,650 

Bunsen Burner 3,000 879 

Domestic Clothesdryer 35,000 10,255 

Domestic Gas Range 65,000 19,045 

Domestic Recessed Oven Section 25,000 7,325 

Domestic Recessed Top Burner Section 40,000 1 1 ,720 

Fireplace Log Lighter (commercial) 50,000 14,650 

Fireplace Log Lighter (residential) 25,000 7,325 

Gas Engines (per horsepower) 10,000 2,930 

Gas Refrigerator 3,000 879 

Mobile Homes (see Appendix E) — — 

Steam Boilers (per horsepower) 50,000 14,650 

Storage Water Heater 

up to 30 gallon (1 14 L) tank 30,000 8,790 

Storage Water Heater 

40 (151 L) to 50 gallon (189 L) tank 50,000 14,650 







TABLE 12-2 

Support of Piping 








Size of Pipe 
Inches mm 


Feet 


mm 


Horizontal 
Vertical 


1/2 

3/4 or 1 

1-1/4 or larger 

1-1/4 or larger 


12.7 6 
19.1 or 25.4 8 
32 or larger 10 
32 or larger Every floor level 


1829 
2438 
3048 



105 



Table 12-3 



UNIFORM PLUMBING CODE 



TABLE 12-3 

Size of Gas Piping 

Maximum Delivery Capacity of Cubic Feet of Gas Per Hour of IPS Pipe Carrying 
Natural Gas of 0.60 Specific Gravity Based on Pressure Drop of 0.5 Inch Water Column 



Pipe Size, 








Length 


in Feet 












Inches 


10 


20 


30 


40 


50 


60 


70 


80 


90 


100 


125 


1/2 


174 


119 


96 


82 


73 


66 


61 


56 


53 


50 


44 


3/4 


363 


249 


200 


171 


152 


138 


127 


118 


111 


104 


93 


1 


684 


470 


377 


323 


286 


259 


239 


222 


208 


197 


174 


1-1/4 


1404 


965 


775 


663 


588 


532 


490 


456 


428 


404 


358 


1-1/2 


2103 


1445 


1161 


993 


880 


798 


734 


683 


641 


605 


536 


2 


4050 


2784 


2235 


1913 


1696 


1536 


1413 


1315 


1234 


1165 


1033 


2-1/2 


6455 


4437 


3563 


3049 


2703 


2449 


2253 


2096 


1966 


1857 


1646 


3 


11,412 


7843 


6299 


5391 


4778 


4329 


3983 


3705 


3476 


3284 


2910 


3-1/2 


16,709 


1 1 ,484 


9222 


7893 


6995 


6338 


5831 


5425 


5090 


4808 


4261 


4 


23,277 


15,998 


12,847 


10,995 


9745 


8830 


8123 


7557 


7091 


6698 


5936 




150 


200 


250 


300 


350 


400 


450 


500 


550 


600 




1/2 


40 


34 


30 


28 


25 


24 


22 


21 


20 


19 




3/4 


84 


72 


64 


58 


53 


49 


46 


44 


42 


40 




1 


158 


135 


120 


109 


100 


93 


87 


82 


78 


75 




1-1/4 


324 


278 


246 


223 


205 


191 


179 


169 


161 


153 




1-1/2 


486 


416 


369 


334 


307 


286 


268 


253 


241 


230 




2 


936 


801 


710 


643 


592 


551 


517 


488 


463 


442 




2-1/2 


1492 


1277 


1131 


1025 


943 


877 


823 


778 


739 


705 




3 


2637 


2257 


2000 


1812 


1667 


1551 


1455 


1375 


1306 


1246 




3-1/2 


3861 


3304 


2929 


2654 


2441 


2271 


2131 


2013 


1912 


1824 




4 


5378 


4603 


4080 


3697 


3401 


3164 


2968 


2804 


2663 


2541 





TABLE 12-3 (Metric) 
Size of Gas Piping 

Maximum Delivery Capacity in Liters Per Second of IPS Pipe Carrying 
Natural Gas of 0.60 Specific Gravity Based on Pressure Drop of 12.7 mm Water Column 



Pipe Size, 








Length 


in mm 












mm 


914 


1829 


2743 


3719 


4633 


5547 


6492 


7315 


8352 


9266 


11582 


12.7 


1.4 


0.9 


0.8 


0.6 


0.6 


0.5 


0.5 


0.4 


0.4 


0.4 


0.3 


19.1 


2.9 


2.0 


1.6 


1.3 


1.2 


1.1 


1.0 


0.9 


0.9 


0.8 


0.7 


25.4 


5.4 


3.7 


3.0 


2.5 


2.3 


2.0 


1.9 


1.7 


1.6 


1.5 


1.4 


32 


11.0 


7.6 


6.1 


5.2 


4.6 


4.2 


3.9 


3.6 


3.4 


3.2 


2.8 


38 


16.5 


11.4 


9.1 


7.8 


6.9 


6.3 


5.8 


5.4 


5.0 


4.8 


4.2 


51 


31.9 


21.9 


17.6 


15.1 


13.3 


12.1 


11.1 


10.3 


9.7 


9.2 


8.1 


64 


50.8 


34.9 


28.0 


24.0 


21.3 


19.3 


17.7 


16.5 


15.5 


14.6 


13,0 


76 


89.8 


61.7 


49.6 


42.4 


37.6 


34.1 


31.3 


29.1 


27.3 


25.8 


22.9 


89 


131.4 


90.3 


72.5 


62.1 


55.0 


49.9 


45.9 


42.7 


40.0 


37.8 


33.5 


102 


183.1 


125.9 


101.1 


86.5 


76.7 


69.5 


63.9 


59.5 


55.8 


52.7 


46.7 




13899 


18532 


23165 


27798 


32431 


37064 


41697 


46330 


50963 


55596 




12.7 


0.3 


0.3 


0.2 


0.2 


0.2 


0.2 


0.2 


0.2 


0.2 


0.1 




19.1 


0.7 


0.6 


0.6 


0.5 


0.4 


0.4 


0.4 


0.3 


0.3 


0.3 




25.4 


1.2 


1.1 


0.9 


0.9 


0.8 


0.7 


0.7 


0.6 


0.6 


0.6 




32 


2.6 


2.2 


1.9 


1.8 


1.6 


1.5 


1.4 


1.3 


1.3 


1.2 




38 


3.8 


3.3 


2.9 


2.6 


2.4 


2.2 


2.1 


2.0 


1.9 


1.8 




51 


7.4 


6.3 


5.6 


5.1 


4.7 


4.3 


4.1 


3.8 


3.6 


3.5 




64 


11.7 


10.0 


8.9 


8.1 


7.4 


6.9 


6.5 


6.1 


5.8 


5.5 




76 


20.7 


17.8 


15.7 


14.3 


13.1 


12.2 


11.4 


10.8 


10.3 


9.8 




89 


30.4 


26.0 


23.0 


20.9 


19.2 


17.9 


16.8 


15.8 


15.0 


14.3 




102 


42.3 


36.2 


32.1 


29.1 


26.8 


24.9 


23.4 


22.1 


21.0 


20.0 





106 



FUEL PIPING 



Table 12-4 



TABLE 12-4 
Medium Pressure Natural Gas Systems for Sizing Gas Piping Systems 
Carrying Gas of 0.60 Specific Gravity 

Capacity of Pipes of Different Diameters and Lengths in Cubic Feet Per Hour for 
Gas Pressure for 2.0 psi with a Drop to 1 .5 psi 



Pipe Size, 








Length in Feet 












Inches 


50 


100 


150 


200 


250 


300 


350 


400 


450 


500 


550 


600 


1/2 


466 


320 


257 


220 


195 


177 


163 


151 


142 


134 


127 


121 


3/4 


974 


669 


537 


460 


408 


369 


340 


316 


297 


280 


266 


254 


1 


1834 


1261 


1012 


866 


768 


696 


640 


595 


559 


528 


501 


478 


1-1/4 


3766 


2588 


2078 


1799 


1577 


1429 


1314 


1223 


1147 


1084 


1029 


982 


1-1/2 


5642 


3878 


3114 


2665 


2362 


2140 


1969 


1832 


1719 


1624 


1542 


1471 


2 


10,867 


7469 


5998 


5133 


4549 


4122 


3792 


3528 


3310 


3127 


2970 


2833 


2-1/2 


17,320 


11,904 


9559 


8181 


7251 


6570 


6044 


5623 


5276 


4984 


4733 


4515 


3 


30,618 


21,044 


16,899 


14,463 


12,818 


11,614 


10,685 


9940 


9327 


8810 


8367 


7983 




650 


700 


750 


800 


850 


900 


950 


1000 


1100 


1200 


1300 


1400 


1/2 


116 


112 


108 


104 


101 


97 


95 


92 


87 


83 


80 


77 


3/4 


243 


234 


225 


217 


210 


204 


198 


193 


183 


174 


167 


161 


1 


458 


440 


424 


409 


396 


384 


373 


363 


345 


329 


315 


302 


1-1/4 


940 


903 


870 


840 


813 


788 


766 


745 


707 


675 


646 


621 


1-1/2 


1409 


1353 


1304 


1259 


1218 


1181 


1147 


1116 


1060 


1011 


968 


930 


2 


2713 


2606 


2511 


2425 


2347 


2275 


2209 


2149 


2041 


1947 


1865 


1791 


2-1/2 


4324 


4154 


4002 


3865 


3740 


3626 


3522 


3425 


3253 


3103 


2972 


2855 


3 


7644 


7344 


7075 


6832 


6612 


6410 


6225 


6055 


5751 


5486 


5254 


5047 


4 


15,592 


14,979 


14,430 


13,935 


13,486 


13,075 


12,698 


12,351 


11,730 


11,190 


10,716 


10,295 




1500 


1600 


1700 


1800 


1900 


2000 


2100 


2200 


2300 


2400 


2500 


2600 


1/2 


74 


71 


69 


67 


65 


63 


62 


60 


59 


57 


56 


55 


3/4 


155 


149 


145 


140 


136 


132 


129 


126 


123 


120 


117 


115 


1 


291 


281 


272 


264 


256 


249 


243 


237 


231 


226 


221 


216 


1-1/4 


598 


578 


559 


542 


526 


512 


499 


486 


475 


464 


454 


444 


1-1/2 


896 


865 


837 


812 


788 


767 


747 


728 


711 


695 


680 


665 


2 


1726 


1667 


1613 


1564 


1519 


1477 


1439 


1403 


1369 


1338 


1309 


1282 


2-1/2 


2751 


2656 


2570 


2492 


2420 


2354 


2293 


2236 


2183 


2133 


2086 


2043 


3 


4862 


4696 


4544 


4406 


4279 


4162 


4053 


3953 


3859 


3771 


3688 


3611 


4 


9918 


9578 


9269 


8986 


8727 


8488 


8267 


8062 


7870 


7691 


7523 


7365 


5 


17,943 


17,327 


16,768 


16,258 


15,789 


15,357 


14,957 


14,585 


14,238 


13,914 


13,610 


13,325 


6 


29,054 


28,057 


27,151 


26,325 


25,566 


24,866 


24,218 


23,616 


23,055 


22,531 


22,038 


21,576 



107 



Table 12-4 (Metric) 



UNIFORM PLUMBING CODE 



TABLE 12-4 (Metric) 

Medium Pressure Natural Gas Systems for Sizing Gas Piping Systems 

Carrying Gas of 0.60 Specific Gravity 

Capacity of Pipes of Different Diameters and Lengths in Liters Per Second for 
Gas Pressure of 13.8 kPa with a Drop to 10.3 kPa 



Pipe Size, 








Length in 


Meters 












mm 


15.2 


30.4 


45.6 


60.8 


76.0 


91.2 


106.4 


121.6 


136.8 


152.0 


167.2 


182.4 


12.7 


3.7 


2.5 


2.0 


1.7 


1.5 


1.4 


1.3 


1.2 


1.1 


1.1 


1.0 


1.0 


19.1 


7.7 


5.3 


4.2 


3.6 


3.2 


2.9 


2.7 


2.5 


2.3 


2.2 


2.1 


2.0 


25.4 


14.4 


9.9 


8.0 


6.8 


6.0 


5.5 


5.0 


4.7 


4.4 


4.2 


3.9 


3.8 


32 


29.6 


20.4 


16.4 


14.0 


12.4 


11.2 


10.3 


9.6 


9.0 


8.5 


8.1 


7.7 


38 


44.4 


30.5 


24.5 


21.0 


18.6 


16.8 


15.5 


14.4 


13.5 


12.8 


12.1 


11.6 


51 


85.5 


58.8 


47.2 


40.4 


35.8 


32.4 


29.8 


27.8 


26.0 


24.6 


23.4 


22.3 


64 


136.3 


93.6 


75.2 


64.4 


57.0 


51.7 


47.6 


44.2 


41.5 


39.2 


37.2 


35.5 


76 


240.9 


165.6 


132.9 


113.8 


100.8 


91.4 


84.1 


78.2 


73.4 


69.3 


65.8 


62.8 




197.6 


212.8 


228.0 


243.2 


258.4 


273.6 


288.8 


304.0 


334.4 


364.8 


395.2 


425.6 


12.7 


0.9 


0.9 


0.8 


0.8 


0.8 


0.8 


0.7 


0.7 


0.7 


0.7 


0.6 


0.6 


19.1 


1.9 


1.8 


1.8 


1.7 


1.7 


1.6 


1.6 


1.5 


1.4 


1.4 


1.3 


1.3 


25.4 


3.6 


3.5 


3.3 


3.2 


3.1 


3.0 


2.9 


2.9 


2.7 


2.6 


2.5 


2.4 


32 


7.4 


7.1 


6.8 


6.6 


6.4 


6.2 


6.0 


5.9 


5.6 


5.3 


5.1 


4.9 


38 


11.1 


10.6 


10.3 


9.9 


9.6 


9.3 


9.0 


8.8 


8.3 


8.0 


7.6 


7.3 


51 


21.3 


20.5 


19.8 


19.1 


18.5 


17.9 


17.4 


16.9 


16.1 


15.3 


14.7 


14.1 


64 


34.0 


32.7 


31.5 


30.4 


29.4 


28.5 


27.7 


26.9 


25.6 


24.4 


23.4 


22.5 


76 


60.1 


57.8 


55.7 


53.7 


52.0 


50.4 


49.0 


47.6 


45.2 


43.2 


41.3 


39.7 


102 


122.7 


117.8 


113.5 


109.6 


106.1 


102.9 


99.9 


97.2 


92.3 


88.0 


84.3 


81.0 




456.0 


486.4 


516.8 


547.2 


577.6 


608.0 


638.4 


668.8 


669.2 


729.6 


760.0 


790.4 


12.7 


0.6 


0.6 


0.5 


0.5 


0.5 


0.5 


0.5 


0.5 


0.5 


0.5 


0.4 


0.4 


19.1 


1.2 


1.2 


1.1 


1.1 


1.1 


1.0 


1.0 


1.0 


1.0 


0.9 


0.9 


0.9 


25.4 


2.3 


2.2 


2.1 


2.1 


2.0 


2.0 


1.9 


1.9 


1.8 


1.8 


1.7 


1.7 


32 


4.7 


4.5 


4.4 


4.3 


4.1 


4.0 


3.9 


3.8 


3.7 


3.6 


3.6 


3.5 


38 


7.0 


6.8 


6.6 


6.4 


6.2 


6.0 


5.9 


5.7 


5.6 


5.5 


5.3 


5.2 


51 


13.6 


13.1 


12.7 


12.3 


11.9 


11.6 


11.3 


11.0 


10.8 


10.5 


10.3 


10.1 


64 


21.6 


20.9 


20.2 


19.6 


19.0 


18.5 


18.0 


17.6 


17.2 


16.8 


16.4 


16.1 


76 


38.3 


36.9 


35.7 


34.7 


33.7 


32.7 


31.9 


31.1 


30.4 


29.7 


29.0 


28.4 


102 


78.0 


75.3 


72.9 


70.7 


68.7 


66.8 


65.0 


63.4 


61.9 


60.5 


59.2 


57.9 


127 


141.2 


136.3 


131.9 


127.9 


124.2 


120.8 


117.7 


114.7 


112.0 


109.5 


107.1 


104.8 


152 


228.6 


220.7 


213.6 


207.1 


201.1 


195.6 


190.5 


185.8 


181.4 


177.2 


173.4 


169.7 



108 



FUEL PIPING 



Table 12-5 



TABLE 12-5 

Medium Pressure Natural Gas Systems for Sizing Gas Piping Systems 

Carrying Gas of 0.60 Specific Gravity 

Capacity of Pipes of Different Diameters and Lengths in Cubic Feet Per Hour for 
Gas Pressure of 3.0 psi with a Drop to 1 .5 psi 



Pipe Size, 








1 


-ength in 


Feet 












inches 50 


100 


150 


200 


250 


300 


350 


400 


450 


500 


550 


600 


1/2 


857 


589 


473 


405 


359 


325 


299 


278 


261 


247 


234 


224 


3/4 


1793 


1232 


990 


847 


751 


680 


626 


582 


546 


516 


490 


467 


1 


3377 


2321 


1864 


1595 


1414 


1281 


1179 


1096 


1029 


972 


923 


881 


1-1/4 


6934 


4766 


3827 


3275 


2903 


2630 


2420 


2251 


2112 


1995 


1895 


1808 


1-1/2 


10,389 


7140 


5734 


4908 


4349 


3941 


3626 


3373 


3165 


2989 


2839 


2709 


2 


20,008 


13,752 


1 1 ,043 


9451 


8377 


7590 


6983 


6496 


6095 


5757 


5468 


5216 


2-1/2 


31,890 


21,918 


17,601 


15,064 


13,351 


12,097 


11,129 


10,353 


9714 


9176 


8715 


8314 


3 


56,376 


38,747 


31,115 


26,631 


23,602 


21,385 


19,674 


18,303 


17173 


16,222 


15,406 


14,698 




650 


700 


750 


800 


850 


900 


950 


1000 


1100 


1200 


1300 


1400 


1/2 


214 


206 


198 


191 


185 


180 


174 


170 


161 


154 


147 


141 


3/4 


448 


430 


414 


400 


387 


375 


365 


355 


337 


321 


308 


296 


1 


843 


810 


780 


754 


729 


707 


687 


668 


634 


605 


580 


557 


1-1/4 


1731 


1663 


1602 


1547 


1497 


1452 


1410 


1371 


1302 


1242 


1190 


1143 


1-1/2 


2594 


2492 


2401 


2318 


2243 


2175 


2112 


2055 


1951 


1862 


1783 


1713 


2 


4995 


4799 


4623 


4465 


4321 


4189 


4068 


3957 


3758 


3585 


3433 


3298 


2-1/2 


7962 


7649 


7369 


7116 


6886 


6677 


6484 


6307 


5990 


5714 


5472 


5257 


3 


14,075 


13,522 


13,027 


12,580 


12,174 


11,803 


11,463 


11,149 


10,589 


10,102 


9674 


9294 


4 


28,709 


27,581 


26,570 


25,658 


24,831 


24,074 


23,380 


22,741 


21 ,598 


20,605 


19,731 


18,956 




1500 


1600 


1700 


1800 


1900 


2000 


2100 


2200 


2300 


2400 


2500 


2600 


1/2 


136 


131 


127 


123 


120 


117 


114 


111 


108 


106 


103 


101 


3/4 


285 


275 


266 


258 


251 


244 


237 


231 


226 


221 


216 


211 


1 


536 


518 


501 


486 


472 


459 


447 


436 


426 


416 


407 


398 


1-1/4 


1101 


1063 


1029 


998 


969 


942 


918 


895 


874 


854 


835 


818 


1-1/2 


1650 


1593 


1542 


1495 


1452 


1412 


1375 


1341 


1309 


1279 


1252 


1225 


2 


3178 


3069 


2970 


2879 


2796 


2720 


2649 


2583 


2522 


2464 


2410 


2360 


2-1/2 


5064 


4891 


4733 


4589 


4457 


4335 


4222 


4117 


4019 


3927 


3842 


3761 


3 


8953 


8646 


8367 


8112 


7878 


7663 


7463 


7278 


7105 


6943 


6791 


6649 


4 


18,262 


17,635 


17,066 


16,546 


16,069 


15,629 


15,222 


14,844 


14,491 


14,161 


13,852 


13,561 


5 


33,038 


31,904 


30,875 


29,935 


29,072 


28,276 


27,539 


26,855 


26,217 


25,620 


25,060 


24,534 


6 


53,496 


51 ,660 


49,993 


48,471 


47,074 


45,785 


44,593 


43,484 


42,451 


41,485 


40,579 


39,727 



109 



Table 12-5 (Metric) UNIFORM PLUMBING CODE 

TABLE 12-5 (Metric) 

Medium Pressure Natural Gas Systems for Sizing Gas Piping Systems 
Carrying Gas of 0.60 Specific Gravity 

Capacity of Pipes of Different Diameters and Lengths in Liters Per Second for 
Gas Pressure of 20.7 kPa with a Drop to 10.3 kPa 

Pipe Size, Length in Meters 

mm 15.2 30.4 45.6 60.8 76.0 91.2 106.4 121.6 136.8 152.0 167.2 182.4 

12.7 6.7 4.6 3.7 3.2 2.8 2.6 2.4 2.2 2.1 1.9 1.8 1.8 

19.1 14.1 9.7 7.8 6.7 5.9 5.4 4.9 4.6 4.3 4.1 3.9 3.7 

25.4 26.6 18.3 14.7 12.6 11.1 10.1 9.3 8.6 8.1 7.6 7.3 6.9 

32 54.5 37.5 30.1 25.8 22.8 20.7 19.0 17.7 16.6 15.7 14.9 14.2 



38 


81.7 


56.2 


45.1 


38.6 


34.2 


31.0 


28.5 


26.5 


24.9 


23.5 


22.3 


21.3 


51 


157.4 


108.2 


86.9 


74.4 


65.9 


59.7 


54.9 


51.1 


47.9 


45.3 


43.0 


41.0 


64 


250.9 


172.4 


138.5 


118.5 


105.0 


95.2 


87.6 


81.5 


76.4 


72.2 


68.6 


65.4 


76 


443.5 


304.8 


244.8 


209.5 


185.7 


168.2 


154.8 


144.0 


135.1 


127.6 


121.2 


115.6 




197.6 


212.8 


228.0 


243.2 


258.4 


273.6 


288.8 


304.0 


334.4 


364.8 


395.2 


425.6 


12.7 


1.7 


1.6 


1.6 


1.5 


1.5 


1.4 


1.4 


1.3 


1.3 


1.2 


1.2 


1.1 


19.1 


3.5 


3.4 


3.3 


3.1 


3.0 


3.0 


2.9 


2.8 


2.6 


2.5 


2.4 


2.3 


25.4 


6.6 


6.4 


6.1 


5.9 


5.7 


5.6 


5.4 


5.3 


5.0 


4.8 


4.6 


4.4 


32 


13.6 


13.1 


12.6 


12.2 


11.8 


11.4 


11.1 


10.8 


10.2 


9.8 


9.4 


9.0 


38 


20.4 


19.6 


18.9 


18.2 


17.6 


17.1 


16.6 


16.2 


15.4 


14.6 


14.0 


13.5 


51 


39.3 


37.8 


36.4 


35.1 


34.0 


33.0 


32.0 


31.1 


29.6 


28.2 


27.0 


25.9 


64 


62.6 


60.2 


58.0 


56.0 


54.2 


52.5 


51.0 


49.6 


47.1 


45.0 


43.0 


41.4 


76 


110.7 


106.4 


102.5 


99.0 


95.8 


92.9 


90.2 


87.7 


83.3 


79.5 


76.1 


73.1 


102 


225.9 


217.0 


209.0 


201.9 


195.3 


189.4 


183.9 


178.9 


169.9 


162.1 


155.2 


149.1 




456.0 


486.4 


516.8 


547.2 


577.6 


608.0 


638.4 


668.8 


699.2 


729.6 


760.0 


790.4 


12.7 


1.1 


1.0 


1.0 


1.0 


0.9 


0.9 


0.9 


0.9 


0.9 


0.8 


0.8 


0.8 


19.1 


2.2 


2.2 


2.1 


2.0 


2.0 


1.9 


1.9 


1.8 


1.8 


1.7 


1.7 


1.7 


25.4 


4.2 


4.1 


3.9 


3.8 


3.7 


3.6 


3.5 


3.4 


3.3 


3.3 


3.2 


3.1 


31 


8.7 


8.4 


8.1 


7.8 


7.6 


7.4 


7.2 


7.0 


6.9 


6.7 


6.6 


6.4 


38 


13.0 


12.5 


12.1 


11.8 


11.4 


11.1 


10.8 


10.6 


10.3 


10.1 


9.8 


9.6 


51 


25.0 


24.1 


23.4 


22.6 


22.0 


21.4 


20.8 


20.3 


19.8 


19.4 


19.0 


18.6 


64 


39.8 


38.5 


37.2 


36.1 


35.1 


34.1 


33.2 


32.4 


31.6 


30.9 


30.2 


29.6 


76 


70.4 


68.0 


65.8 


63.8 


62.0 


60.3 


58.7 


57.3 


55.9 


54.6 


53.4 


52.3 



102 143.7 138.7 134.3 130.2 126.4 123.0 119.8 116.8 114.0 111.4 109.0 106.7 
127 259.9 251.0 242.9 235.5 228.7 222.4 216.7 211.3 206.2 201.6 197.2 193.0 
152 420.8 406.4 393.3 381.3 370.3 360.2 350.8 342.1 334.0 326.4 319.2 312.5 



110 



FUEL PIPING 



Table 12-6 



TABLE 12-6 

Medium Pressure Natural Gas Systems for Sizing Gas Piping Systems 
Carrying Gas of 0.60 Specific Gravity 

Capacity of Pipes of Different Diameters and Lengths in Cubic Feet Per Hour for 
Gas Pressure of 5.0 psi with a Drop to 1 .5 psi 



Pipe Size, 








Length in Feet 












Inches 


50 


100 


150 


200 


250 


300 


350 


400 


450 


500 


550 


600 


1/2 


1399 


961 


772 


661 


586 


531 


488 


454 


426 


402 


382 


365 


3/4 


2925 


2010 


1614 


1381 


1224 


1109 


1021 


949 


891 


842 


799 


762 


1 


5509 


3786 


3041 


2602 


2306 


2090 


1923 


1789 


1678 


1585 


1506 


1436 


1-1/4 


11,311 


7774 


6243 


5343 


4735 


4291 


3947 


3672 


3445 


3255 


3091 


2949 


1-1/2 


16,947 


11,648 


9353 


8005 


7095 


6429 


5914 


5502 


5162 


4876 


4631 


4418 


2 


32,638 


22,432 


18,014 


15,417 


13,664 


12,381 


11,390 


10,596 


9942 


9391 


8919 


8509 


2-1/2 


52,020 


35,753 


28,711 


24,573 


21,779 


19,733 


18,154 


16,889 


15,846 


14,968 


14,216 


13,562 


3 


91 ,962 


63,205 


50,756 


43,441 


38,501 


34,884 


32,093 


29,865 


28,013 


26,461 


25,131 


23,976 




650 


700 


750 


800 


850 


900 


950 


1000 


1100 


1200 


1300 


1400 


1/2 


349 


335 


323 


312 


302 


293 


284 


277 


263 


251 


240 


231 


3/4 


730 


701 


676 


653 


632 


612 


595 


578 


549 


524 


502 


482 


1 


1375 


1321 


1273 


1229 


1190 


1153 


1120 


1089 


1035 


987 


945 


908 


1-1/4 


2824 


2713 


2614 


2524 


2442 


2368 


2300 


2237 


2124 


2027 


1941 


1865 


1-1/2 


4231 


4065 


3916 


3781 


3659 


3548 


3446 


3351 


3183 


3037 


2908 


2794 


2 


8149 


7828 


7542 


7283 


7048 


6833 


6636 


6455 


6130 


5848 


5600 


5380 


2-1/2 


12,988 


12,477 


12,020 


11,608 


1 1 ,233 


10,891 


10,577 


10,288 


9771 


9321 


8926 


8575 


3 


22,960 


22,057 


21 ,249 


20,520 


19,858 


19,253 


18,698 


18,187 


17,273 


16,478 


15,780 


15,160 


4 


46,830 


44,990 


43,342 


41,855 


40,504 


39,271 


38,139 


37,095 


35,231 


33,611 


32,186 


30,921 




1500 


1600 


1700 


1800 


1900 


2000 


2100 


2200 


2300 


2400 


2500 


2600 


1/2 


222 


214 


208 


201 


195 


190 


185 


181 


176 


172 


168 


165 


3/4 


464 


449 


434 


421 


409 


398 


387 


378 


369 


360 


352 


345 


1 


875 


845 


818 


798 


770 


749 


729 


711 


694 


678 


664 


650 


1-1/4 


1796 


1735 


1679 


1628 


1581 


1537 


1497 


1460 


1425 


1393 


1363 


1334 


1-1/2 


2691 


2599 


2515 


2439 


2368 


2303 


2243 


2188 


2136 


2087 


2042 


1999 


2 


5183 


5005 


4844 


4696 


4561 


4436 


4321 


4213 


4113 


4020 


3932 


3849 


2-1/2 


8261 


7978 


7720 


7485 


7270 


7071 


6886 


6715 


6556 


6406 


6267 


6135 


3 


14,605 


14,103 


13,648 


13,233 


12,851 


12,500 


12,174 


11,871 


1 1 ,589 


11,326 


11,078 


10,846 


4 


29,789 


28,766 


27,838 


26,991 


26,213 


25,495 


24,831 


24,214 


23,639 


23,100 


22,596 


22,121 


5 


53,892 


52,043 


50,363 


48,830 


47,422 


46,124 


44,923 


43,806 


42,765 


41,792 


40,879 


40,021 


6 


87,263 


84,269 


81,550 


79,067 


76,787 


74,686 


72,740 


70,932 


69,247 


67,671 


66,193 


64,803 



111 



Table 12-6 (Metric) 



UNIFORM PLUMBING CODE 



Pipe Size, 



mm 



15.2 



TABLE 12-6 (Metric) 

Medium Pressure Natural Gas Systems for Sizing Gas Piping Systems 

Carrying Gas of 0.60 Specific Gravity 

Capacity of Pipes of Different Diameters and Lengths in Liters Per Second for 
Gas Pressure of 34.5 kPa with a Drop to 10.3 kPa 



Length in Meters 



30.4 



45.6 



60.8 



76.0 



91.2 106.4 121.6 136.8 152.0 167.2 182.4 



12.7 


11.0 


7.6 


6.1 


5.2 


4.6 


4.2 


3.8 


3.6 


3.4 


3.2 


3.0 


2.9 


19.1 


23.0 


15.8 


12.7 


10.9 


9.6 


8.7 


8.0 


7.5 


7.0 


6.6 


6.3 


6.0 


25.4 


46.3 


29.8 


23.9 


20.5 


18.1 


16.4 


15.1 


14.1 


13.0 


12.5 


11.8 


11.3 


32 


89.0 


61.2 


49.1 


42.0 


37.3 


33.8 


31.1 


28.9 


27.1 


25.6 


24.3 


23.2 


38 


133.3 


91.6 


73.6 


63.0 


55.8 


50.6 


46.5 


43.3 


40.6 


38.4 


36.4 


34.8 


51 


256.8 


176.5 


141.7 


121.3 


107.5 


97.4 


89.6 


83.4 


78.2 


73.9 


70.2 


66.9 


64 


409.2 


281.3 


225.9 


193.3 


171.3 


155.2 


142.8 


132.9 


124.7 


117.8 


111.8 


106.7 


76 


723.5 


497.2 


399.3 


341.7 


302.9 


274.4 


252.5 


234.9 


220.4 


208.2 


197.7 


188.6 




197.6 


212.8 


228.0 


243.2 


258.4 


273.6 


288.0 


304.0 


334.4 


364.8 


395.2 


425.6 


12.7 


2.7 


2.6 


2.5 


2.5 


2.4 


2.3 


2.2 


2.2 


2.1 


2.0 


1.9 


1.8 


19.1 


5.7 


5.5 


5.3 


5.1 


5.0 


4.8 


4.7 


4.6 


4.3 


4.1 


3.9 


3.8 


25.4 


10.8 


10.4 


10.0 


9.7 


9.4 


9.1 


8.8 


8.6 


8.1 


7.8 


7.4 


7.1 


32 


22.2 


21.3 


20.6 


19.9 


19.2 


18.6 


18.1 


17.6 


16.7 


15.9 


15.3 


14.7 


38 


33.3 


32.0 


30.8 


39.7 


28.8 


27.9 


27.1 


26.4 


25.0 


23.9 


22.9 


22.0 


51 


64.1 


61.6 


59.3 


57.3 


55.4 


53.8 


52.2 


50.8 


48.2 


46.0 


44.1 


42.3 


64 


102.2 


98.2 


94.6 


91.3 


88.4 


85.7 


83.2 


80.9 


76.9 


73.3 


70.2 


67.5 


76 


180.6 


173.5 


167.2 


161.4 


156.2 


151.5 


147.1 


143.1 


135.9 


129.6 


124.1 


119.3 


102 


368.4 


353.9 


341.0 


329.3 


318.6 


308.9 


300.0 


291.8 


277.2 


264.4 


253.2 


243.3 




456.0 


486.4 


516.8 


547.2 


577.6 


608.0 


638.4 


668.8 


699.2 


729.6 


760.0 


790.4 


12.7 


1.7 


1.7 


1.6 


1.6 


1.5 


1.5 


1.5 


1.4 


1.4 


1.4 


1.3 


1.3 


19.1 


3.7 


3.5 


3.4 


3.3 


3.2 


3.1 


3.0 


3.0 


2.9 


2.8 


2.8 


2.7 


25.4 


6.9 


6.6 


6.4 


6.2 


6.1 


5.9 


5.7 


5.6 


5.5 


5.3 


5.2 


5.1 


32 


14.1 


13.6 


13.2 


12.8 


12.4 


12.1 


11.8 


11.5 


11.2 


11.0 


10.7 


10.5 


38 


21.2 


20.4 


19.8 


19.2 


18.6 


18.1 


17.6 


17.2 


16.8 


16.4 


16.1 


15.7 


51 


40.8 


39.4 


38.1 


36.9 


35.9 


34.9 


34.0 


33.1 


32.4 


31.6 


30.9 


30.3 


64 


65.0 


62.8 


60.7 


58.9 


57.2 


55.6 


54.2 


52.8 


51.6 


50.4 


49.3 


48.3 


76 


114.9 


111.0 


107.4 


104.1 


101.1 


98.3 


95.8 


93.4 


91.2 


89.1 


87.2 


85.3 


102 


234.3 


226.3 


219.0 


212.3 


206.2 


200.6 


195.3 


190.5 


186.0 


181.7 


177.8 


174.0 


127 


424.0 


409.4 


396.2 


384.1 


373.1 


362.9 


353.4 


344.6 


336.4 


328.8 


321.6 


314.8 


152 


686.5 


662.9 


641.6 


622.0 


604.1 


587.6 


572.2 


558.0 


544.8 


532.4 


520.7 


509.8 



112 



FUEL PIPING Table 12-7 

TABLE 12-7 
Maximum Capacity of Pipe in Thousands of BTU per Hour of Undiluted Liquified Petroleum Gases 

(Based on a Pressure Drop of 0.5 Inch Water Column) 
Low Pressure 1 1 " Water Column 



Pipe Size, 
Inches 10 


20 


30 


40 


50 


Length 
60 


in Feet 
70 


80 


90 


100 


125 


150 


200 


1/2 275 


189 


152 


129 


114 


103 


96 


89 


83 


78 


69 


63 


55 


3/4 567 


393 


315 


267 


237 


217 


196 


185 


173 


162 


146 


132 


112 


1 1071 


732 


590 


504 


448 


409 


378 


346 


322 


307 


275 


252 


213 


1-1/4 2205 


1496 


1212 


1039 


913 


834 


771 


724 


677 


630 


567 


511 


440 


1-1/2 3307 


2299 


1858 


1559 


1417 


1275 


1181 


1086 


1023 


976 


866 


787 


675 



6221 4331 3465 2992 2646 2394 2205 2047 1921 1811 1606 1496 1260 



TABLE 12-7 (Metric) 
Maximum Capacity of Pipe in Thousands of Watts of Undiluted Liquified Petroleum Gases 

(Based on a Pressure Drop of 12.7 mm Water Column) 
Low Pressure 279 mm Water Column 



Pipe Size, 



Length in Millimeters 



mm 


3048 


6096 


9144 


12192 


15240 


18288 


21336 


24384 


27432 


30480 


38100 


45720 60960 


12.7 


80.6 


55.4 


44.5 


37.8 


33.4 


30.2 


28.1 


26.1 


24.3 


22.9 


20.2 


18.5 16.1 


19.1 


166.1 


115.2 


92.3 


78.2 


69.4 


63.6 


57.4 


54.2 


50.7 


47.5 


42.8 


38.7 32.8 


25.4 


313.8 


214.5 


172.9 


147.7 


131.3 


119.8 


110.8 


101.4 


94.4 


90.0 


80.6 


73.8 62.4 


32 


646.1 


438.3 


355.1 


304.4 


267.5 


244.4 


225.9 


212.1 


198.4 


184.6 


166.1 


149.7 128.9 


38 


969.0 


673.6 


544.4 


456.8 


415.2 


373.6 


346.0 


318.2 


299.7 


286.0 


253.7 


230.6 197.8 


51 


1822.8 


1269.0 


1015.2 


876.7 


775.3 


701.4 


646.1 


600.0 


562.9 


530.6 


470.6 


438.3 369.2 



113 



Table 12-8 UNIFORM PLUMBING CODE 

TABLE 12-8 

For Undiluted Liquified Petroleum Gas Pressure of 10.0 psi with Maximum Pressure Drop of 3.0 psi 

Maximum Delivery Capacity in Cubic Feet of Gas per Hour of IPS Pipe of Different Diameters and Lengths Carrying Undiluted 

Liquified Petroleum Gas of 1 .52 Specific Gravity 



Pipe Size, 








Length in 


Feet 












inches 


50 


100 


150 


200 


250 


300 


350 


400 


450 


500 


550 


600 


1/2 


1000 


690 


550 


470 


420 


390 


350 


325 


300 


285 


272 


260 


3/4 


2070 


1423 


1142 


978 


867 


785 


722 


672 


631 


596 


566 


540 


1 


3899 


2680 


2152 


1842 


1632 


1479 


1361 


1266 


1188 


1122 


1066 


1017 


1-1/4 


8005 


5502 


4418 


3782 


3351 


3037 


2794 


2599 


2439 


2303 


2188 


2087 


1-1/2 


11,994 


8244 


6620 


5666 


5022 


4550 


4186 


3894 


3654 


3451 


3278 


3127 


2 


23,100 


15,877 


12,750 


10,912 


9671 


8763 


8062 


7500 


7037 


6647 


6313 


6023 


2-1/2 


36,818 


25,305 


20,321 


17,392 


15,414 


13,966 


12,849 


11,953 


11,215 


10,594 


10,062 


9599 


3 


65,088 


44,734 


35,923 


30,746 


27,249 


24,690 


22,714 


21,131 


19,827 


18,728 


17,787 


16,969 




650 


700 


750 


800 


850 


900 


950 


1000 


1100 


1200 


1300 


1400 


1/2 


250 


240 


230 


222 


215 


208 


202 


198 


188 


180 


171 


164 


3/4 


517 


496 


478 


462 


447 


433 


421 


409 


389 


371 


355 


341 


1 


973 


935 


901 


870 


842 


816 


793 


771 


732 


699 


669 


643 


1-1/4 


1999 


1920 


1850 


1786 


1729 


1676 


1628 


1583 


1504 


1434 


1374 


1320 


1-1/2 


2995 


2877 


2772 


2676 


2590 


2511 


2439 


2372 


2253 


2149 


2058 


1977 


2 


5767 


5541 


5338 


5155 


4988 


4836 


4697 


4568 


4339 


4139 


3964 


3808 


2-1/2 


9192 


8831 


8507 


8215 


7950 


7708 


7486 


7281 


6915 


6597 


6318 


6069 


3 


16,250 


15,611 


15,040 


14,523 


14,055 


13,627 


13,234 


12,872 


12,225 


11,663 


11,169 


10,730 


4 


33,145 


31 ,842 


30,676 


29,623 


28,667 


27,795 


26,993 


26,255 


24,935 


23,789 


22,780 


21,885 




1500 


1600 


1700 


1800 


1900 


2000 


2100 


2200 


2300 


2400 


2500 


2600 


1/2 


158 


152 


148 


143 


139 


136 


133 


130 


127 


124 


121 


118 


3/4 


329 


317 


307 


298 


289 


281 


274 


267 


261 


255 


249 


244 


1 


619 


598 


579 


561 


545 


530 


516 


503 


491 


480 


470 


460 


1-1/4 


1271 


1228 


1138 


1152 


1119 


1088 


1060 


1033 


1009 


986 


964 


944 


1-1/2 


1905 


1839 


1780 


1726 


1676 


1630 


1588 


1548 


1512 


1477 


1445 


1415 


2 


3669 


3543 


3428 


3324 


3228 


3140 


3058 


2982 


2911 


2845 


2783 


2724 


2-1/2 


5847 


5646 


5464 


5298 


5145 


5004 


4874 


4753 


4640 


4534 


4435 


4342 


3 


10,337 


9982 


9660 


9366 


9096 


8847 


8616 


8402 


8203 


8016 


7841 


7676 


4 


21 ,083 


20,360 


19,705 


19,103 


18,552 


18,045 


17,575 


17,138 


16,731 


16,350 


15,993 


15,657 


5 


38,143 


36,834 


35,645 


34,560 


33,564 


32,645 


31,795 


31,005 


30,268 


29,579 


28,933 


28,325 


6 


61 ,762 


59,643 


57,718 


55,961 


54,348 


52,860 


51,483 


50,204 


49,011 


47,895 


46,849 


45,865 



114 



FUEL PIPING Table 1 2-8 (Metric) 

TABLE 12-8 (Metric) 
For Undiluted Liquified Petroleum Gas Pressure of 68.9 kPa with Maximum Pressure Drop of 20.7 kPa 

Maximum Delivery Capacity in Liters per Second of IPS Pipe of Different Diameters 
and Lengths Carrying Undiluted Liquified Petroleum Gas of 1.52 Gravity 



Pipe Size, 








Length in 


Meters 












mm 


15.2 


30.4 


45.6 


60.8 


76.0 


91.2 


106.4 


121.6 


136.8 


152.0 


167.2 


182.4 


12.7 


8.0 


5.5 


4.4 


3.8 


3.4 


3.0 


2.8 


2.6 


2.4 


2.3 


2.2 


2.1 


19.1 


16.6 


11.4 


9.1 


7.8 


6.9 


6.3 


5.8 


5.4 


5.1 


4.8 


4.5 


4.3 


25.4 


31.2 


21.4 


17.2 


14.7 


13.1 


11.8 


10.9 


10.1 


9.5 


9.0 


8.5 


8.1 


32 


64.0 


44.0 


35.3 


30.3 


26.8 


24.3 


22.4 


20.8 


19.5 


18.4 


17.5 


16.7 


38 


96.0 


66.0 


53.0 


45.3 


40.2 


36.4 


33.5 


31.2 


29.2 


27.6 


26.2 


25.0 


51 


184.8 


127.0 


102.0 


87.3 


77.4 


70.1 


64.5 


60.0 


56.3 


53.2 


50.5 


48.2 


64 


294.5 


202.4 


162.6 


139.1 


123.3 


111.7 


102.8 


95.6 


89.7 


84.8 


80.5 


76.8 


76 


520.7 


357.9 


287.4 


246.0 


218.0 


197.5 


181.7 


169.1 


158.6 


149.8 


142.3 


135.8 




197.6 


212.8 


228.0 


243.2 


258.4 


273.6 


288.8 


304.0 


334.4 


364.8 


395.2 


425.6 


12.7 


2.0 


1.9 


1.8 


1.8 


1.7 


1.7 


1.6 


1.6 


1.5 


1.4 


1.4 


1.3 


19.1 


4.1 


4.0 


3.8 


3.7 


3.6 


3.5 


3.4 


3.3 


3.1 


3.0 


2.8 


2.7 


25.4 


7.8 


7.5 


7.2 


7.0 


6.7 


6.5 


6.3 


6.2 


5.9 


5.6 


5.4 


5.1 


32 


16.0 


15.4 


14.8 


14.3 


13.8 


13.4 


13.0 


12.7 


12.0 


11.5 


11.0 


10.6 


38 


24.0 


23.0 


22.2 


21.4 


20.7 


20.1 


19.5 


19.0 


18.0 


17.2 


16.5 


15.8 


51 


46.1 


44.3 


42.7 


41.2 


39.9 


38.7 


37.6 


36.5 


34.7 


33.1 


31.7 


30.5 


64 


73.5 


70.7 


68.1 


65.7 


63.6 


61.7 


60.0 


58.2 


55.3 


52.8 


50.5 


48.6 


76 


130.0 


124.9 


120.3 


116.2 


112.4 


109.0 


105.9 


103.0 


97.8 


93.3 


89.4 


85.8 


102 


265.2 


254.7 


245.4 


237.0 


229.3 


222.4 


215.9 


210.0 


199.5 


190.3 


182.2 


175.1 




456.0 


486.4 


516.8 


547.2 


577.6 


608.0 


638.4 


668.8 


699.2 


729.6 


760.0 


790.4 


12.7 


1.3 


1.2 


1.2 


1.1 


1.1 


1.1 


1.1 


1.0 


1.0 


1.0 


1.0 


0.9 


19.1 


2.6 


2.5 


2.5 


2.4 


2.3 


2.2 


2.2 


2.1 


2.1 


2.0 


2.0 


2.0 


25.4 


5.0 


4.8 


4.6 


4.5 


4.4 


4.2 


4.1 


4.0 


3.9 


3.8 


3.8 


3.7 


32 


10.2 


9.8 


9.1 


9.2 


9.0 


8.7 


8.5 


8.3 


8.1 


7.9 


7.7 


7.6 


38 


15.2 


14.7 


14.2 


13.8 


13.4 


13.0 


12.7 


12.4 


12.1 


11.8 


11.6 


11.3 


50.8 


29.4 


28.3 


27.4 


26.6 


25.8 


25.1 


24.5 


23.9 


23.3 


22.8 


22.3 


21.8 


64 


46.8 


45.2 


43.7 


42.4 


41.2 


40.0 


39.0 


38.0 


37.1 


36.3 


35.5 


34.7 


76 


82.7 


79.9 


77.3 


74.9 


72.8 


70.8 


68.9 


67.2 


65.6 


64.1 


62.7 


61.4 


102 


168.7 


162.9 


157.6 


152.8 


148.4 


144.4 


140.6 


137.1 


133.8 


130.8 


127.9 


125.3 


127 


305.1 


294.7 


285.2 


276.5 


268.5 


261.2 


254.4 


248.0 


242.1 


236.6 


231.5 


226.6 



152 494.1 477.1 461.7 447.7 434.8 422.9 411.9 401.6 392.1 383.2 374.8 366.9 



115 



Table 12-9 



UNIFORM PLUMBING CODE 



TABLE 12-9 

Capacities of Listed Metal Appliance Connectors for Use with Gas Pressures 

Not Less Than an Eight Inch Water Column 

Capacities for Various Lengths, in Thousands Btu/h 
Semi-Rigid Flexible Connector (Based on Pressure Drop of 0.2" Water Column Natural Gas of 1 1 00 Btu/cu. ft.) 
Connector Nominal I.D., 
O.D, Inches Inches 1 foot 1-1/2 feet 2 feet 2-1/2 feet 3 feet 4 feet 5 feet 6 feet 









All Gas Appli 


ances 






3/8 


1/4 


40 


33 


29 


27 


25 


1/2 


3/8 


93 


76 


66 


62 


58 


5/8 


1/2 


189 


155 


134 


125 


116 




3/4 


404 


330 


287 


266 


244 




1 


803 


661 


573 


534 


500 



Ranges and Dryers Only 



101 



90 



80 



Notes: 

1 . Flexible connector listings are based on the nominal internal diameter. 

2. Semi-rigid connector listings are based on the outside diameter. 

3. Gas connectors are certified by the testing agency as complete assemblies, including the fittings and 
valves. Capacities shown are based on the use of fittings and valves supplied with the connector. 

4. Capacities for LPG are 1 .6 times the natural gas capacities shown. 

Example: Capacity of a 1/4" flexible connector one (1 ) foot long is 40,000 x 1 .6 = 64,000 Btu/h 



TABLE 12-9 (Metric) 

Capacities of Listed Metal Appliance Connectors for Use with Gas Pressures 

Not Less Than a 203 mm Water Column 



Capacities for Various Lengths, in Thousands Watts 
Semi-Rigid Flexible Connector (Based on Pressure Drop of 50 Pa mm Water Column Natural Gas of 1 1 .4 W/L) 
Connector Nominal I.D., 
O.D, mm mm 305 mm 457 mm 610 mm 762 mm 914 mm 1219 mm 1524 mm 1829 mm 



All Gas Appliances 



9.5 


6.4 


11.7 


9.7 


8.5 


7.9 


7.3 


12.7 


9.5 


27.3 


22.3 


19.3 


18.2 


17.0 


15.9 


12.7 


55.4 


45.4 


39.3 


36.6 


34.0 




19.1 


118.4 


96.7 


84.1 


77.9 


71.5 




25.4 


235.3 


193.7 


167.9 


156.5 


146.5 



Ranges and Dryers Only 



29.6 



26.4 



23.4 



Note: See Table 12-9 (English units). 

Example: Capacity of a 6.4 mm flexible connector 0.3 m long is 1 1720W x 1 .6 = 18752W 



116 



FUEL PIPING 



Table 12-10 



TABLE 12-10 

Capacities of Listed Metal Appliance Connectors for Use with Gas Pressures 

Less Than an Eight Inch Water Column 

Capacities for Various Lengths, in Thousands Btu/h 
Semi-Rigid Flexible Connector (Based on Pressure Drop of 0.2" Water Column Natural Gas of 1 1 00 Btu/cu. ft.) 
Connector Nominal I.D., 
O.D, Inches Inches 1 foot 1-1/2 feet 2 feet 2-1/2 feet 3 feet 4 feet 5 feet 6 feet 









All Gas Appli 


iances 






3/8 


1/4 


28 


23 


20 


19 


17 


1/2 


3/8 


66 


54 


47 


44 


41 


5/8 


1/2 


134 


110 


95 


88 


82 


- 


3/4 


285 


233 


202 


188 


174 


- 


1 


567 


467 


405 


378 


353 



Ranges and Dryers Only 



72 



63 



57 



Notes: 

1. Flexible connector listings are based on the nominal internal diameter. 

2. Semi-rigid connector listings are based on the outside diameter. 

3. Gas connectors are certified by the testing agency as complete assemblies, including the fittings and valves. 
Capacities shown are based on the use of fittings and valves supplied with the connector. 

4. Capacities for LPG are 1 .6 times the natural gas capacities shown. 

Example: Capacity of a 1/4" flexible connector 1 foot long is 28,000 x 1 .6 = 44,800 Btu/h 



TABLE 12-10 (Metric) 
Capacities of Listed Metal Appliance Connectors for Use with Gas Pressures 

Less Than a 203 mm Water Column 

Capacities for Various Lengths, in Thousands Watts 
Semi-Rigid Flexible Connector (Based on Pressure Drop of 50 Pa Water Column Natural Gas of 1 1 .4 W/L) 

Connector Nominal I.D., 
O.D, mm mm 305 mm 457 mm 610 mm 762 mm 914 mm 1219 mm 1524 mm 1829 mm 



All Gas Appliances 



9.5 


6.4 


8.2 


6.7 


5.9 


5.6 


5 


12.7 


9.5 


19.3 


15.8 


13.8 


12.9 


12 


15.9 


12.7 


39.3 


32.2 


27.8 


25.8 


24 




19.1 


83.5 


68.3 


59.2 


55.1 


51 




25.9 


166.1 


136.8 


118.7 


110.8 


103.4 



Ranges and Dryers Only 



21.1 



18.5 



16.7 



Note: See Table 12-10 (English units). 

Example: Capacity of a 6.4 mm flexible connector 305 mm long is 8204 x 1.6 = 13126.4W 



117 



UNIFORM PLUMBING CODE 



^ 



118 



CHAPTER 13 

MEDICAL GAS SYSTEMS 



1301.0 Scope 

1301.1 The provisions herein shall apply to the 
installation, testing, and certification of medical gas 
and vacuum piping for safe use in patient care 
hospitals, clinics, and other health care facilities. 

1301.2 The purpose of this chapter is to provide 
minimum requirements for the installation, testing, 
and certification of medical gas and medical vacuum 
systems, from the point of supply to the user outlets 
or inlets. These provisions do not cover portable 
systems, alarm systems, or cylinder storage 
requirements. 

1302.0 Definitions 

1302.1 Building Supply - The pipe from the source 
of supply to a building or structure. 

1302.2 Manifold - A device for connecting outlets 
of one or more gas cylinders to the central piping 
system for that specific gas. 

1302.3 Medical Air - Compressed air used in a 
medical facility. 

1302.4 Medical Gas - Gases used in a medical 
facility, including oxygen, nitrous oxide, nitrogen, 
carbon dioxide, helium, medical air, and mixtures of 
these gases. Standards of purity apply. 

1 302.5 Medical Gas System - A system consisting 
of a central supply system (manifold, bulk, or 
compressors), including control equipment and 
piping extending to station outlets in the facility 
where medical gases may be required. 

1302.6 Medical Vacuum System - A system 
consisting of central vacuum-producing equipment 
with pressure and operating controls, shutoff valves, 
alarm warning systems, gauges, and a network of 
piping extending to and terminating with station 
inlets at locations where patient suction may be 
required. Includes surgical vacuum systems, gas 
scavenging systems, and bedside suction systems. 

1 302.7 Purge, Row - The removal of oxygen from a 
system by an inert gas during brazing. 

1302.8 Purge, System - The removal of argon and 
nitrogen from a system with the medical gas 
required for that system. 

1302.9 SCFM - Standard cubic feet per minute, the 
unit measure for a volume of gas at standard 
conditions (68°F [20°C] and 1 atmosphere of pressure). 

1302.10 Special Care Area - An area in a medical 
facility where special care is provided, including 



intensive care units, coronary care units, recovery 
rooms, and respiratory care units. 

1302.11 Special Hazard Area - An area, such as a 
kitchen, laundry, and engineering plant, where 
flammable materials may be used or stored. 

1302.12 Station Inlet - An inlet in a vacuum piping 
system at which the user makes connections and 
disconnections. 

1302.13 Station Outlet - An outlet point in a 
medical gas piping system at which the user makes 
connections and disconnections. 

1302.14 Use Point - A room or area within a room, 
where medical gases are dispensed to a patient for 
medical purposes. 

1 302.1 5 User Outlet - See station outlet. 

1302.16 Valve, Branch - A valve serving horizontal 
piping extending from a riser to a station outlet or 
inlet. 

1302.17 Valve, Riser - A valve at the base of a 
vertical main, which isolates that main. 

1302.18 Valve, Service Isolation - A valve which 
isolates one piece of equipment from another. 

1302.19 Valve, Source - A single valve at the 
source which controls a number of units that make 
up the total source. 

1302.20 Valve, Zone - A valve which controls the 
gas or vacuum service to a particular area. 

1303.0 General Requirements 

1303.1 Medical gas and medical vacuum systems 
shall be designed and installed in accordance with 
the requirements of this chapter and the installation 
requirements of this Code. Systems shall be designed 
to provide for an adequate and safe supply of 
medical gas and medical vacuum from the point of 
supply to the user outlet or inlet. Installation and 
testing of medical gas and medical vacuum systems 
shall be inspected by the Administrative Authority. 
Items not covered in this chapter shall be installed in 
accordance with the Administrative Authority. 

1303.2 Certification of medical gas and medical 
vacuum systems shall conform to the requirements 
of this Code and the Administrative Authority. 

1 303.3 When deemed necessary, the Administrative 
Authority may require evidence of the competency 
of the installers and the certifiers. 

1 303.4 All medical gas and medical vacuum systems 
shall be supplied from at least two sources - primary 



119 



1303.4-1305.3 



UNIFORM PLUMBING CODE 



and reserve, e.g., two tank manifolds, two cylinders, 
two air compressors, or two vacuum pumps. 
However, two supply pipelines are not required. 

1304.0 Plan Review 

1 304.1 Before any medical gas or medical vacuum 
system is installed or altered in any hospital, medical 
facility, or clinic, duplicate plans and specifications 
shall be filed with the Administrative Authority. 
Approval of the plans shall be obtained prior to the 
issuance of any permit by the Administrative 
Authority. 

1304.2 Plans and specifications shall show, in detail: 

1304.2.1 Plot plan of the site, drawn to scale, 
indicating the location of existing or new 
cylinder storage areas, property lines, 
driveways, and existing or proposed buildings. 

1304.2.2 Piping layout of the proposed piping 
system or alteration, including all alarms, valves, 
origin of gases and user outlets/inlets. The 
demand and loading of any piping, existing or 
future, shall also be indicated. 



1 304.2.3 Complete specification of materials. 

1304.3 Plans and specifications submitted to the 
Administrative Authority shall be of sufficient clarity 
to indicate the nature and extent of the work 
proposed and shall show in detail that such work 
will conform to the provisions of this Code. 

1304.4 A record of as-built plans and valve 
identification records shall remain on the site at all 
times. 



1305.0 System Performance 

1305.1 Required Operating Pressures. All 

medical gas and medical vacuum systems shall be 
capable of delivering service in the pressure ranges 
listed in Table 13-1. 

1305.2 Minimum Flow Rates. All medical gas and 
medical vacuum systems shall be capable of 
supplying the flow rates listed in Table 13-2. 

1305.3 Minimum Station Outlets/Inlets. Station 
outlets and inlets for medical gas and medical vacuum 
systems shall be provided as listed in Table 13-3. 



TABLE 13-1 

Operating Pressures for Medical Gas and Medical Vacuum Systems 



System 


Symbol 


Minimum Pressure 


Oxygen 


o 2 


50 psig (0.34 MPa) 


Medical Vacuum 


Vac 


15"(0.38m)Hg 


Nitrous Oxide 


N 2 


50 psig (0.34 MPa) 


Medical Compressed Air 


Med Air 


50 psig (0.34 MPa) 


Nitrogen 


N 2 


160 psig (1.10 MPa) 


Helium 


He 


50 psig (0.34 MPa) 


Carbon Dioxide 


C0 2 


50 psig (0.34 MPa) 



Maximum Pressure 
60 psig (0.41 MPa) 

25"(0.64m)Hg 
60 psig (0.41 MPa) 
60 psig (0.41 MPa) 
300 psig (2.07 MPa) 
60 psig (0.41 MPa) 
60 psig (0.41 MPa) 



Oxygen 

Nitrous Oxide 

Medical Compressed Air 

Nitrogen 

Vacuum 

Carbon Dioxide 



TABLE 13-2 

Minimum Flow Rates 
.71 CFM per outlet 1 (20 LPM) 
.71 CFM per outlet 1 (20 LPM) 
.71 CFM per outlet 1 (20 LPM) 
15 CFM (0.42 m 3 /min.) free air per outlet 
1 SCFM (0.03 Sm 3 /min.) per inlet 2 



1 



.71 CFM per outlet 1 (20 LPM) 
Helium .71 CFM per outlet (20 LPM) 

Any room designed for a permanently located respiratory ventilator or anesthesia machine shall have an outlet 
capable of a flow rate of 180 LPM (6.36 CFM) at the station outlet. 

For testing and certification purposes, individual station inlets shall be capable of a flow rate of 3 SCFM, while 
maintaining a system pressure of not less than 12 inches (305 mm) at the nearest adjacent vacuum inlet. 



120 



MEDICAL GAS SYSTEMS 



1306.0-1307.1 



1306.0 System Sizing 

For small installations such as out patient facilities, 
trauma centers, laboratories, and 100-bed hospitals, 
the system sizing shall be as shown in Table 13-4 
and pipe sizing shall be as required in Section 
1307.0. For larger systems or those requiring special 
considerations, engineered drawings shall be 
required as indicated in Section 1307.3. 



1307.0 Required Pipe Sizing 

1307.1 Where the maximum demand for each 
medical gas or vacuum system nor the maximum 
length of piping between the source equipment and 
the most distant station outlet /inlet does not exceed 
the table, the size of each section of the system shall be 
determined by means of Table 13-4 and 13-6. Systems 
beyond the range of Table 13-6 shall be sized by means 
of the methods set forth in 1307.3 of this section. 



TABLE 13-3 

Minimum Outfets/lnlets per Station 



Location 

Patient rooms for 

medical/surgical, 

obstetrics and pediatrics 
Examination/treatment 

for nursing units 
Intensive care (all) 
Nursery 1 

General operating rooms 
Cystoscopic and invasive 

special procedures 
Recovery Delivery and 

labor/delivery/ 

recovery rooms 2 
Labor rooms 
First aid and emergency 

treatment 3 
Autopsy 

Anesthesia workroom 
1 

2 
3 
4 



Oxygen 



1/bed 



1/bed 
3/bed 
2/bed 
2/room 
2/room 

2/bed 
2/room 

1/bed 
1/bed 



Medical 
Vacuum 

1/bed 



1/bed 

3/bed 

2/bed 

3/room 4 

3/room 4 

2/bed 
3/room 4 

1/bed 
1/bed 4 

1 /station 



Medical 
Air 

1/bed 



2/bed 

1/bed 

2/room 

2/room 

1/bed 
1/room 

1/bed 
1/bed 



Nitrous 
Oxide 



Nitrogen Helium 



Carbon 
Dioxide 



1/room 1/room 



1 /station _____ 

1 /station — 1 /station — — — — 

Includes pediatric nursery. 
Includes obstetric recovery. 

Emergency trauma rooms used for surgical procedures shall be classified as general operating rooms. 
Vacuum inlets required are in addition to any inlets used as part of a scavenging system for removal of anesthetizing 
gases. 



TABLE 13-4 

System Sizing - Flow Factors for More than One Inlet/Outlet Terminal Unit 
System Minimum Flow Requirements 1 

Minimum Permissible 



Number of 
Inlet/Outlet Terminal 
Units per Facility 


Diversity Percentage 

of Average Flow per 

Inlet/Outlet Terminal Units 


System Flow2 
SCFM (liters/minute) 
All Pressurized Vacuum 
Medical Gas Systems Systems 


1 -10 


100% 


Actual Demand 


See 


11-25 


75% 


7.0 (200) 


Table 


26-50 


50% 


13.1 (375) 


13-5 


51 -100 


50% 


17.5(500) 





1 Flow rates of individual inlet/outlet terminals per Table 13-2. 

2 The minimum system flow is the average inlet/outlet flow times the number of inlet/outlet terminal units times the 



diversity percentage. 



121 



1307.2-1311.2 



UNIFORM PLUMBING CODE 



1307.2 To determine the size of each section of pipe 
in any system within the range of Table 13-6, 
proceed as follows: 

1307.2.1 Measure the length of the pipe from 
the source equipment location to the most 
remote inlet /outlet terminal on the system. 

1307.2.2 In Table 13-6, select the column 
showing that distance, or the next longer distance 
if the table does not give the exact length. 

1 307.2.3 Starting at the most remote outlet, find 
in the vertical column just selected, the medical 
gas or vacuum demand for that inlet /outlet. If 
the exact figure of demand is not shown, choose 
the next larger figure below in the column. 

1307.2.4 Opposite this demand figure, in the 
first column at the left in Table 13-6 will be 
found the correct size of pipe. 

1307.2.5 Using this same vertical column, 
proceed in a similar manner for each section of 
pipe serving this inlet /outlet. For each section of 
pipe, determine the total gas or vacuum demand 
supplied by the section, using Table 13-4. 

1 307.2.6 Size each section of branch piping not 
previously sized by measuring the distance 
from the source equipment location to the most 
remote inlet /outlet in that branch and follow 
the procedures of 1307.2.2, 1307.2.3, 1307.2.4, 
and 1307.2.5 

Note: Size branch piping in the order of the 
distance from the source location, beginning with 
the most distant outlet not previously sized. 

1307.3 For conditions other than those covered by 
1307.1 of this section, such as longer runs of greater gas 
or vacuum demands, the size of each gas or vacuum 
piping system shall be determined by standard 
engineering methods acceptable to the Administrative 
Authority and each such system shall be so designed 
that the total pressure drop or gain between the source 
equipment and any inlet /outlet will not exceed the 
allowable pressures shown in Table 13-1. 

1308.0 Workmanship 

1308.1 All design, construction, and workmanship 
shall be in conformity with accepted engineering 
practices and shall be of such character to secure the 
results sought by this Code. 

1308.2 Cracks, holes, or other imperfections in 
materials shall not be concealed by welding, brazing, 
or soldering, or by using paint, wax, tar, or other 
leak-sealing or repair agents. 

1308.3 Burred ends of all pipe and tubing shall be 
reamed to the full bore of the pipe or tube and all 
chips shall be removed. 



1309.0 Materials 

1309.1 Piping for medical gas systems shall be 
listed Type K or L medical gas tube. 

1309.2 Fittings for medical gas systems used for 
connecting copper tubing shall be of listed copper, 
brass, or bronze suitable for making brazed 
connections. Valves, manifolds, terminal 
connections, and other such devices installed in 
medical gas systems shall be bronze, brass, or of 
other materials that meet the requirements of Section 
301.0. 

1309.3 Piping for medical gas systems shall be 
suitable for and compatible with oxygen service. 
Tubing shall be cleaned and delivered to the job site, 
and plugged or capped. Fittings, valves, and other 
devices shall be cleaned, sealed, and marked as 
described in Section 1310.0. The installer shall 
furnish documentation certifying that all installed 
piping materials comply with these requirements. 

1 309.4 Piping for medical vacuum systems shall be 
listed seamless Type K or L copper tubing, or other 
approved or listed materials. For vacuum systems, 
the provision in Section 1309.3 for oxygen 
compatibility and cleanliness does not apply. 

1309.5 Fittings for medical vacuum systems shall be 
the same as described in Section 1309.2. 

1309.6 All ball valves used in medical gas and 
medical vacuum systems shall be full way. 

1309.7 Piping for medical nitrogen systems in 
excess of 200 psig (1.36 MPa gauge) and not 
exceeding 300 psig (2.07 MPa gauge) shall be type 
"K" copper. 

1310.0 Cleaning 

1310.1 Prior to delivery to the installation site, 
piping, valves, fittings and other components of 
medical gas systems shall have been internally 
cleaned to remove oil, grease, and other oxidizable 
materials as if for oxygen service. 

1310.2 On-site cleaning shall be limited to 
recleaning joints that have become contaminated 
immediately prior to assembly. 

1311.0 Installation of Piping 

1311.1 All piping and tubing shall be cut square 
using a clean, sharp piping or tubing cutter which is 
free from grease, oil, or other lubricants not suitable 
for oxygen service, and shall be reamed to the full 
inner diameter of the pipe or tube. 

1311.2 Copper tubing ends and fittings shall be 
cleaned with an abrasive cloth to ensure proper 
joining when brazed. 



122 



MEDICAL GAS SYSTEMS 



1311.3-1311.6 



1311.3 Threads for brass piping shall be standard 
tapered pipe threads. Threaded joints in piping 
systems shall be applied with polytetrafluorethylene 
tape or with other non-oil-based thread sealant 
approved for oxygen service. Sealant shall be applied 
to the male threads only. All excess tape or sealant 
shall be removed. 

1311.4 No burrs, copper dust, oil, thread joint 
compound, or other contaminates shall be 
introduced into the piping at any time during the 
installation process. 



1311.5 All installations of medical gas and medical 
vacuum piping, including buried piping, shall be 
adequately protected against frost, freezing, 
corrosion, and physical damage. Buried piping shall 
be encased in ducts or casings wherever it passes 
under a roadway, driveway, parking lot, or other 
areas subject to surface loading. Exposed piping shall 
be protected against physical damage from portable 
equipment such as carts, stretchers, and trucks. 

1311.6 Medical gas and medical vacuum piping 
shall be installed to protect against physical damage. 



TABLE 13-5 

Outlet Rating for Vacuum Piping Systems 



Location of Medical-Surgical 
Vacuum Outlets 


Free-Air Allowance, 

Expressed as CFM (LPM) 

at 1 Atmosphere 


Zone Allowances 

Corridors- Risers 

Main Supply Line-Valves 


Per Room 


Per Outlet 


Simultaneous 

Usage, 
Factor Percent 


Air to Be 
Transported 
CFM (LPM)* 


Operating Rooms 

Major "A" (Radical, Open Heart) 
(Organ Transplant) 
(Radical Thoracic) 

Major "B" (All Other Major ORs) 

Minor 


3.5(99.1) 
3.5(99.1) 
3.5(99.1) 

2.0 (56.6) 

1.0 (28.3) 


- 


100 
100 
100 

100 

100 


3.5 (99.1) 
3.5 (99.1) 
3.5 (99.1) 

2.0 (56.6) 

1.0 (28.3) 


Delivery Rooms 


1.0 (28.3) 


- 


100 


1.0 (28.3) 


Recovery Rooms (Post- 
Anesthesia) and 

Intensive Care Units (a minimum 
of 2 outlets per bed in each 
such department) 

1st outlet at each bed 
2nd outlet at each bed 
3rd outlet at each bed 
All others at each bed 


- 


3.0 (85.0) 
1.0 (28.3) 
1.0 (28.3) 
1.0 (28.3) 


50 
50 
10 
10 


1.5 (42.5) 
0.5 (14.2) 
0.1 (2.8) 
0.1 (2.8) 


Emergency Rooms 


- 


1.0 (28.3) 


100 


1.0 (28.3) 


Patient Rooms 
Surgical 

Medical 
Nurseries 


- 


1.0 (28.3) 
1.0 (28.3) 
1.0 (28.3) 


50 
10 
10 


0.5 (14.2) 
0.1 (2.8) 
0.1 (2.8) 


Treatment and Examining Rooms 


- 


0.5 (14.2) 


10 


0.05 (1.4) 


Autopsy Area 


- 


2.0 (56.6) 


20 


0.4 (11.3) 


Inhalation Therapy, Central 
Supply and Instructional Areas 


- 


1.0 (28.3) 


10 


0.1 (2.8) 



Tree air at 1 atmosphere 



123 



1311.6-1312.2 



UNIFORM PLUMBING CODE 



TABLE 13-6 







Size of Gas/Vacuum Piping 




ft x 304.8 = mm 
in x 25.4 = mm 






Maximum Delivery Capacity3 in SCFM (LPM) 


Medical Gas 
System 


Pipe Size 
Inch2 


Length 
100 (30) 250 (76) 


of Piping in Feet (m)i 

500 (152) 750 (228) 1000(304) 


Oxygen 


1/2 
3/4 

1 


15.0 (425) 
40.0 (1133) 
50.0 (1416) 


10.6 (300) 
28.3 (801) 
50.0 (1416) 


7.4 (209) 
19.6 (555) 
40.2 (1138) 


5.9 (167) 
15.7 (445) 
32.2 (912) 


5.1 (144) 
13.3 (377) 
27.7 (784) 


Nitrous Oxide 


1/2 
3/4 

1 


15.0 (425) 
30.0 (849) 
40.0 (1113) 


9.5 (269) 
24.7 (699) 
40.0 (1133) 


6.5 (184) 
17.1 (484) 
34.7 (983) 


5.3 (150) 
13.7 (388) 
28.2 (798) 


4.5 (127) 
11.7 (331) 
24.3 (688) 


Medical Air 


1/2 

3/4 

1 


18.1 (512) 
40.0 (1133) 
50.0 (1416) 


11.1 (314) 
29.9 (847) 
50.0 (1416) 


7.8 (221) 

21.0 (595) 

42.1 (1192) 


6.3 (177) 
16.5 (467) 
35.8(1013) 


5.3 (151) 

14.1 (399) 

29.2 (826) 


Vacuum 


1 

1-1/4 

1-1/2 

2 


22.8 (645) 

40.1 (1135) 

63.7 (1804) 

132.7 (3758) 


13.7 (388) 
24.5 (694) 
38.9 (1101) 
81.4 (2305) 


9.5 (269) 

16.7 (473) 

26.8 (759) 
56.0 (1586) 


7.6 (215) 
13.3 (377) 
21.1 (600) 
45.0 (1274) 


6.5 (184) 
11.2 (317) 
17.9 (507) 
38.3(1084) 


Nitrogen 


1/2 

3/4 

1 


25.0 (708) 

60.0 (1699) 

110.0 (3115) 


25.0 (708) 

60.0 (1699) 

110.0 (3115) 


25.0 (708) 

60.0 (1699) 

110.0 (3115) 


23.8 (674) 

60.0(1699) 

110.0(3115) 


20.6 (583) 

54.2(1535) 

110.0(3115) 



1 Length of piping includes a 30% allowance for fittings. 

2 One-half inch (12.7 mm) diameter pipe is the minimum size allowed in medical gas systems. 

3 Based on the following maximum pressure drops: 

Oxygen, nitrous oxide, and medical air- 5 psig (10" Hg) 
Vacuum - 1 .96 psig (4" Hg) 
Nitrogen -20 psig (41" Hg) 



Openings for piping in concealed spaces shall be fire- 
stopped, with the construction having a fire 
resistance equal to or greater than the original 
construction. Medical gas and medical vacuum risers 
installed in pipe shafts shall be protected against 
physical damage, effects of excessive heat corrosion, 
and contact with oil. Medical gas and medical 
vacuum risers shall not be located in elevator shafts. 

1311.7 Medical gas and medical vacuum piping 
shall not be run through special hazard areas. If due 
to structural restrictions, medical gas or medical 
vacuum piping must be run through special hazard 
areas, the piping shall be installed in an enclosure 
that will prevent the liberation of gases into the 
special hazard area. 

1 31 1 .8 Approved or listed flexible connectors may 
be used where required for flexibility. Flexible 
connectors shall not penetrate walls, floors, ceilings, 



or partitions and shall not exceed five (5) feet (1524 
mm) in length. 

1311.9 Piping Support and Bracing. Piping and 
other components used in medical gas and vacuum 
systems shall be adequately supported and braced as 
required elsewhere in this Code. Seismic 
considerations shall conform to the requirements of 
this Code and the Administrative Authority. 

1312.0 Joints 

1312.1 Copper-to-copper joints shall be brazed 
without flux using a copper-phosphorus or copper- 
phosphorus-silver brazing filler metal (BCuP series). 

1312.2 During brazing, the system shall be purged 
with USP grade nitrogen or argon at a flow rate 
sufficient to maintain an oxygen-free environment, 
to prevent the formation of scale within the tubing 
during brazing. 



124 



MEDICAL GAS SYSTEMS 



1312.3-1314.3 



1312.3 Dissimilar metals shall be brazed using an 
approved or listed proper flux and either copper 
phosphorus (BCuP) or a silver (BAg) brazing filler. 
The flux shall be applied sparingly. After brazing, all 
remaining flux shall be removed by washing the 
joint with hot water. 

1 31 2.4 After brazing, all open tube ends shall be 
capped, leaving USP grade nitrogen or argon in the 
system until the system is tested and inspected. 

1312.5 Approved or listed valves and fittings 
having flared or compression joints may be used for 
three-quarter (3/4) inch (19.1 mm) nominal size or 
smaller pipe when piping is accessible. 

1313.0 Valves 

1313.1 General Requirements. All valves in 
medical gas and vacuum piping systems, except 
those at the source of supply and at station 
outlets /inlets, shall: 

1313.1.1 Be accessible fullway ball valves, 
which shall open or close using not more than 
one-quarter turn of the handle; 

1313.1.2 Have building supply valves readily 
accessible; 

Exception: Approved or listed butterfly type 
valves may be installed in piping two and 
one half (2-1/2) inches (64 mm) and larger. 

1313.1.3 Have working parts that are oil-free 
and non-corrosive; 

1313.1.4 Be properly labeled, as described in 
Section 1316.0, to identify the type of gas they 
control. 

1313.2 Location. Valves for medical gas and 
medical piping systems shall be installed in the 
following locations: 

1313.2.1 At the building supply where the line 
enters the building or downstream of the source 
of supply; 

1313.2.2 At the source of supply and at each 
supply manifold, located upstream of the 
building supply valve in the immediate vicinity 
of the source equipment; 

1313.2.3 At each piece of equipment, including 
all accessory devices, vacuum pumps, and 
medical air compressors; 

1313.2.4 At the base of each riser serving more 
than one (1 ) floor; 

1313.2.5 At each floor or horizontal branch 
between the riser and the first station 
outlet /inlet- 
Exception: Single story facilities shall have 



a supply valve installed between the main 
and the station outlet /inlet for each branch. 

1 31 3.2.6 Outside of each operating room. 

1313.3 Zone Valves. Zone valves shall be located in 
enclosures having transparent removable windows. 
Additional valves shall be installed in the following 
locations: 

1313.3.1 Immediately outside of each 
anesthetizing area or room; 

1313.3.2 Inside of each special care area, or 
adjacent to the nursing station; 

1313.3.3 Within all nursing stations or main 
control panel areas, or adjacent to the nursing 
station, in view from any location within the 
nursing station. 

Zone valves shall be installed so that the closure 
of one zone valve area does not affect the operation 
or supply of gases or vacuum to other areas. Each 
zone valve more than fifteen (15) feet (4572 mm) 
from a station outlet shall have a service isolation 
valve installed immediately adjacent to the riser for 
that branch. 

Exception: Anesthetizing suites and special care 
areas shall be supplied by lateral branch lines off 
the risers with no other intervening shutoff 
valves. 

1313.4 Enclosures. Where valves are concealed in 
any enclosure, the door or entry to the enclosure 
shall be identified and color coded with the type of 
gas service installed, as described in Section 1314.0. 
Enclosures shall be of sufficient size to permit valve 
operation. Valve handles in the "off" position shall 
prevent closure of the access panel or door. 

1314.0 Pressure Regulating Equipment 

1314.1 Pressure regulating equipment shall be 
installed in the supply main upstream of the final 
line-pressure relief valve. Each central supply system 
shall have a pressure relief valve set at fifty (50) 
percent above normal line pressure, installed 
downstream of the pressure regulator and upstream 
of any shutoff valve. All pressure relief valves shall 
close automatically when excess pressure has been 
released. 

1314.2 Pressure Gauges. A pressure gauge shall be 
installed in the main line adjacent to the alarm 
actuating switch. Gauges shall be labeled as 
described in Section 1316.0, and shall be readily 
visible at all times from a standing position. 

1314.3 A pressure relief valve shall not be isolated 
from its intended use by any valve. 



125 



1315.0-1318.6 



UNIFORM PLUMBING CODE 



1315.0 Station Outlets/Inlets 

Station outlets and inlets shall be installed in strict 
accordance with the manufacturer's instructions. 
After installation of the piping, but before 
installation of the station outlets /inlets and other 
medical gas and medical vacuum system 
components (e.g., pressure actuating switches for 
alarms, manifolds, pressure gauges, or pressure 
relief valves), system lines shall be purged by means 
of USP grade nitrogen or argon. 

1316.0 Marking and Identification 

1316.1 All medical gas piping, valves, and 
manifolds shall have permanent labels bearing the 
name of the gas they carry or control. 

1 31 6.2 The labeling shall be by means of metal tags, 
stenciling, stamping, or adhesive markers, and shall 
be visible. 

1316.3 Each pipe shall bear a label at intervals of 
twenty (20) feet (6096 mm) before and after barriers, 
behind access doors, and at outlets and inlets. 
Vertical risers shall be marked at every floor. The 
label shall: 

1316.3.1 Have lettering at least three-eighths 
(3/8) (9.5 mm) high; 

1 31 6.3.2 Be applied with the lettering parallel 
to the axis of the pipe; 

1316.3.3 Have directional arrows applied to all 
piping indicating the flow of gas. 

1316.4 The labels shall be in the following colors: 
Gas Marking Colors 

Medical Air Yellow background with black letters 
Nitrogen Black background with white letters 

Nitrous Oxide Blue background with white letters 
Oxygen Green background with white letters 

Vacuum White background with black letters 

Helium Brown background with white letters 

Carbon Dioxide Gray background with black or white 
letters 

1316.5 Valve Identification 

1316.5.1 All valves and manifolds shall be 
identified by means of a metal tag, stamped with 
the name of the gas it conveys or controls and 
securely attached to the valve or manifold. 

1316.5.2 Each valve installed in a medical gas 
piping system shall be marked with a symbol, 
number, or description for area of control. A 
record shall be made listing the rooms /area 
controlled by each valve for each gas, and shall 
remain with the facility owner. 



1 31 6.5.3 Where a valve is accessible, its location 
shall be permanently identified with the 
following: "(Type Gas) Shutoff Valve for 
(Location or Zone)". The identification shall be 
lettered and color coded as described in Section 
1316.0. 

1317.0 Alarms 

1317.1 An alarm system with both an audible and 
visual signal shall be installed in each medical gas 
and medical vacuum system. This alarm system shall 
have two separate signal panels located in areas 
where they will be under continuous surveillance. 

1317.2 These alarms shall indicate any change in 
pressure above or below the normal operating 
pressure ranges listed in Table 13-1, any change from 
one supply source to another, any failure of the 
emergency reserve to operate, and low pressure in 
the reserve source. 

1 31 7.3 Functioning of all alarm components shall be 
verified in accordance with testing and monitoring 
requirements of the manufacturer and the 
Administrative Authority. 

1318.0 Medical Air System 

1318.1 The medical air system shall consist of two 
units working separately and/or in unison to 
provide a continuous service. The above components 
shall be installed with a receiver tank and piped to 
the system. The assembly shall be equipped with 
isolation valves so that each compressor unit and 
receiver can be isolated and serviced without 
disrupting service. 

1318.2 The intake to medical air compressors shall 
be located outdoors above roof level a minimum 
distance of ten (10) feet (3048 mm) from any door, 
window, other intake, or opening in the building, 
and a minimum distance of twenty (20) feet (6096 m 
m) above the ground. 

1318.3 Each medical air compressor shall have a 
control valve installed so that shutting off or failure 
of the largest unit will not affect the operation of 
other unit(s). 

1318.4 Drains shall be installed on dryers, 
aftercoolers, separators, and receivers. 

1318.5 Air intakes for separate medical air 
compressors may be joined together to one common 
intake and shall be located in a position where there 
is no contamination from any other system. Air 
intakes shall be turned down and screened. 

1318.6 Medical air compressors shall be installed in 
a well lit, ventilated, and clean location, and shall be 
accessible. The location shall be provided with 



126 



MEDICAL GAS SYSTEMS 



1318.6-1322.2 



drainage facilities. The medical air compressor area, 
when installed as a source, shall be located 
separately from other medical gas system sources, 
and shall be readily accessible for maintenance. 

1319.0 Medical Vacuum Pump System 

1319.1 The medical vacuum pump system shall 
consist of two units working separately and /or in 
unison to provide a continuous service. The above 
components shall be installed with a receiver tank 
and piped to the system. The assembly shall be 
equipped with isolation valves so that each pump 
unit and receiver can be isolated and serviced 
without disrupting service. The discharge of the 
vacuum system shall be located away from any air 
intake. 

1319.2 The exhaust from the vacuum pumps shall 
be piped to the outside with the end turned down 
and screened. The exhaust terminal shall be a 
minimum horizontal distance of thirty (30) feet (9144 
mm) from any door or window and fifty (50) feet 
(15240 mm) horizontal distance from any mechanical 
air intake. 

1319.3 Each vacuum pump shall have a control 
valve installed so that shutting off or failure of the 
largest unit will not affect the operation of other 
unit(s). The system shall maintain one hundred (100) 
percent redundancy. 

1319.4 Drains shall be installed and terminate in an 
approved location. 

1319.5 The vacuum plant shall be installed in a well 
lit, ventilated and clean location with ample 
accessibility. The location shall be provided with 
drainage facilities. The vacuum plant, when 
installed as a source, shall be located separately from 
other medical vacuum system sources, and shall be 
readily accessible for maintenance. 

1320.0 Future Extensions 

Where provision is made for future extensions of 
existing medical gas or vacuum systems, the pipes 
shall be valved and fitted with plugs or caps. 

1321.0 Testing 

1321.1 Advance Notice. Advance notice shall be 
required as in Section 1322.2. 

1321.2 Responsibility. The equipment, material, 
and labor necessary for inspection and testing shall 
be furnished by the permit holder or by the person 
who is requesting the inspection. 

1321.3 Media. The piping of medical gas and 
medical vacuum systems shall be tested with USP 



grade nitrogen or argon. 

1321.4 Testing. Tests shall be conducted in the 
presence of the Administrative Authority or a duly 
appointed representative. 

1321.5 Retesting. If the Administrative Authority 
finds that the work will not pass the tests, necessary 
corrections shall be made and the work shall then be 
resubmitted for test or inspection. 

1321.6 Rough Testing. Before attachment of system 
components (e.g., pressure-actuating switches for 
alarms, manifolds, pressure gauges, or pressure 
relief valves), but after installation of the station 
outlets and inlets, with test caps in place, and before 
closing of the walls, each section of the piping 
system shall be subjected to a test pressure of one 
hundred-fifty (150) psig (1.03 MPa gauge) with USP 
grade nitrogen or argon. This test pressure shall be 
maintained until each joint has been examined for 
leakage by means of soapy water. The source valve 
shall be closed during the test. Any leaks shall be 
located, repaired, and retested. 

1321.7 Final Testing. For each medical gas and 
medical vacuum system, the completely assembled 
station outlets/inlets and all other system 
components shall be installed prior to testing. Each 
piping system shall be subjected to a twenty-four 
(24)-hour standing pressure test at twenty (20) 
percent above the normal operation line pressure. 
The test gas used shall be USP grade nitrogen or 
argon. The source valve and all outlets shall be 
closed and the test gas shall be disconnected. The 
piping system shall remain leak-free for twenty-four 
(24) hours. The only allowable pressure changes 
during the twenty-four (24)-hour test period shall be 
those caused by variations in the ambient 
temperature around the piping system. Any leaks 
shall be located, repaired, and retested. 

1322.0 Inspection 

1322.1 Scope. All new medical gas and vacuum 
piping systems, portions of existing systems which 
may be affected by new work, and changes in 
existing systems, shall be inspected by the 
Administrative Authority to ensure compliance with 
the requirements of this Code, and to ensure that the 
installation and construction of the medical gas and 
vacuum systems are in accordance with approved 
plans. 

1322.2 Advance Notice. It shall be the duty of the 
person doing the work authorized by the permit to 
notify the Administrative Authority, orally or in 
writing, that said work is ready for inspection. Such 
notification shall be given not less than twenty-four 
(24) hours before the work is to be inspected. 



127 



1322.3-1323.3 



UNIFORM PLUMBING CODE 



1322.3 Responsibility. It shall be the duty of the 
holder of the permit to determine that the work will 
stand the test prescribed, before giving the 
notification. 

1322.4 Testing. Tests shall be conducted in the 
presence of the Administrative Authority or a duly 
appointed representative. 

1322.5 Retesting. If the Administrative Authority 
finds that the work will not pass the tests, necessary 
corrections shall be made and the work shall then be 
resubmitted for test or inspection. 

1322.6 Corrections. Notices of correction or 
violation shall be written by the Administrative 
Authority and may be posted at the site of the work 
or mailed or delivered to the permittee or an 
authorized representative. Refusal or failure to 
comply with any such notice or order within ten (10) 
days of receipt thereof, shall be considered a 
violation of this Code, and shall be subject to the 
penalties set forth elsewhere in this Code for 
violations. 

1322.7 Approval. Upon the satisfactory completion 
of all tests and certification of the medical gas and 
medical vacuum systems, a certificate of approval 
shall be issued by the Administrative Authority to 
the permittee. 

1 322.8 Covering or Use. No medical gas or medical 
vacuum system or part thereof, shall be covered, 
concealed or put into use until it has been tested, 
inspected, and accepted as required in this Code. 

1322.9 Uncovering. Any medical gas and vacuum 
system or part thereof which is covered or concealed 
before being tested and inspected as required in this 
Code, shall be uncovered for inspection, after notice to 
uncover the work has been issued to the permittee or 
his authorized representative by the Administrative 
Authority. 



labeling of pipelines, station outlets, and control 

valves; 

1 323.2.4 Testing for cross-connection, flow rate, 
system pressure drop, and system performance; 

1323.2.5 Functional testing of pressure relief 
valves and safety valves; 

1323.2.6 Functional testing of all sources of 
supply; 

1323.2.7 Functional testing of alarm systems, 
including accuracy of system components; 

1323.2.8 Purge flushing of system and filling 
with specific source gas; 

1323.2.9 Testing for purity and cleanliness of 
source gases; 

1323.2.10 Testing for specific gas identity at 
each station outlet. 

1323.3 A report which includes at least the specific 
items mentioned in Section 1323.2 shall be delivered 
to the Administrative Authority prior to acceptance 
of the system. 



1323.0 System Certification 

1323.1 Prior to any medical gas system being placed 
in service, each and every system shall be certified, 
as described in Section 1323.2. This certification shall 
be accomplished by an independent third party 
certification agency which is approved by the 
Administrative Authority. 

1323.2 Certification tests, verified and attested to by 
the certification agency, shall include the following: 

1323.2.1 Verifying compliance with the 
installation requirements; 

1323.2.2 Testing and checking for leakage, 
correct zoning, and identification of control 
valves; 

1323.2.3 Checking for identification and 



128 



CHAPTER 14 

MANDATORY REFERENCED STANDARDS 



Table of Contents for Table 14-1 

Title Page 

Appliances and Appurtenances - Plumbing 130 

Backflow Preventers (see Valves and Appurtenances) 
Backwater Valves (see Interceptors and Backwater Valves) 
Cleanouts (see Traps and Cleanouts) 

Drainage System - Sanitary 131 

Drains -Storm 137 

Building - Below Ground 149 

Interior -Above Ground 149 

Drains - Subsoil 138 

Fixtures and Trim - Plumbing 139 

Hangers and Supports 142 

Indirect Waste Piping and Special Wastes 142 

Interceptors and Backwater Valves 146 

Joining Materials and Methods 

Medical Gas Piping 146 

Sanitary Drainage Systems 135 

Sanitary Vents 154 

Storm Drains 150 

Subsoil Drains 139 

Water Supply System 160 

Joining Methods - Indirect Waste Piping and Special Waste 145 

Manholes 146 

Medical Gas and Vacuum Systems 146. 

Miscellaneous 146 

Pumps 147 

Roof Drains 138 

Sewer, Building (see Drainage System - Sanitary) 

Sewer, Building Combined 148 

Traps and Cleanouts 152 

Valves and Appurtenances 159 

Vents and Venting 153 

Water Supply Systems 155 

Wrapping and Coating 162 

Footnotes to standards listed in Table 14-1 and abbreviations are at the end of the table. 



129 



Table 14-1 



UNIFORM PLUMBING CODE 



TABLE 14-1 
Standards for Materials, Equipment, Joints and Connections 

Where more than one standard has been listed for the same material or method, the relevant portions of all such standards 
shall apply. 



Item 



ANSI 



ASTM 



Other 



APPLIANCES AND APPURTENANCES - 
PLUMBING 

Chimneys, factory-built residential type and building 
heating appliances 

Dishwashers, households 



Dishwashers, commercial 

Draft Hoods 

Electrical heating, water supply, and power boilers 

Electrical heating appliances 

Food waste disposers (grinders), household 



Food waste disposers (grinders), commercial 

Gas vents 
Icemakers 
Laundry equipment, household 

Manual food and beverage dispensing equipment 

Manually Operated Gas Valves for Appliances, 
Appliance Connector Valves and Hose 
End Valves 

Manually Operated Metallic Gas Valves (Line Type) 
for Use in Gas Piping Systems Up to 125 psig 
(Sizes 1/2 in. through 2 in.) 

Large Metallic Valves for Gas Distribution 
(Manually Operated, NPS 2-1/2 to 12, 125 psig 
Maximum) 

Metal Gas Connectors for Gas Appliances 
Quick Disconnect Devices for Use with Gas Fuel 
Pressure Regulating Valves for LP Gas 
Pigtails and Flexible Hose Connectors for LP-Gas 
Steel auxiliary tanks for oil-burner fuel 
Steel inside tanks for oil burner fuel 
Constant-level oil valves 
Oil fired boiler assemblies 
Water Heaters 
Water heater relief valve drain tubes 



UL 103-95 

AH AM DW-2PR-86 

UL 749-94 

ASSE 1006-89 

ASSE 1004-90 
UL 921-95 

Z21. 12-90 

UL 834-91 

UL 499-87 

ASSE 1008-89 

AHAM FWD-2PR-80 

(R1989) 

UL 430-86 

ASSE 1009-90 
AHAMFWD-1-83 

UL441-91 

UL 563-91 

ASSE 1007-92 
AHAM HLW-2 PR-86 

NSF 18-90 

Z21. 15-92 



ASMEB1 6.33-90 

ASMEB1 6.38-85 

Z21 .24-93 
Z21.41-89 
UL 144-85 
UL 569-94 
UL 443-89 
UL 80-92 
UL 352-92 
UL 726-90 



ASME 
A1 12.4.1 -93 



NSF No. 3-82 



130 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Electric Booster and Commercial Storage Tank 
Water Heaters 


UL 1453-94 






Gas, Volume III, circulating tank instantaneous 
and large automatic type water heaters 


Z21.10.3a-94 
Z21. 10.32-90 
Z21.10.3b-92 






Gas, Volume I, automatic storage-type water 
heaters with input of 75,000 BTU/H (22 kW), or less 


Z21.10.1a-94 






Electric 


Z21.10.1a-91 
UL 174-89 






Oil 


Z21.10.1b-92 
UL 732-87 






Gas Fired Low-Pressure Steam and Hot Water 
Boilers and Addenda 


Z21. 13-91 






DRAINAGE SYSTEM - SANITARY 








Building Sewers 








Cast iron soil pipe and fittings - hub and spigot 




A 74-93 (Note 1) 


CISPI HSN-85 


Hubless cast iron sanitary system 






CISPI 301-90 
CISPI 310-90 
IAPMO IS 6-95 


Ductile iron pipe centrifugally cast in sand-lined 
or metal molds 


AWWAC151/ 
A21.51-91 


A 377-89 




Ductile iron or grey iron fittings 


AWWAC110/ 
A21. 10-93 


A 377-89 




Ductile iron compact fittings 


AWWAC153/ 
A21 .53-88 






Clay pipe 


A1 06.6-70 


C 700-91 
C 425-90a 


IAPMO IS 18-85 


Asbestos-cement nonpressure sewer pipe 




C 428-92 
(Notes 6 & 7) 




Copper alloy sand casting for general applications 




B 584-93b 
(Note 5) 




Seamless copper water tube 




B 88-93a 


IAPMO IS 3-93 


Copper drainage tube 




B 306-92 


IAPMO IS 3-93 


Cast copper alloy solder joint 
drainage fittings 


ASMEB1 6.23-92 




IAPMO IS 3-93 


Wrought copper and copper 
alloy solder-joint drainage fittings 


ASME B1 6.29-86 (Note 1) 




IAPMO IS 3-93 


Concrete sewer, storm drain and culvert pipe 




C 14-92 




Low pressure air test for building sewers 
(Installation) 






IAPMO IS 16-84 


Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) 
Sch. 40 plastic drain, waste and vent pipe 
and fittings 


NSF 14-90 


D 2661 -94a (Note 1) 


IAPMO IS 1-91 
IAPMO IS 5-92 



131 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 


ANSI 


ASTM 


Other 


Acrylonitrile-Butadiene-Styrene 
(ABS) sewer pipe and fittings 


NSF 14-90 


D 2751-93 (Note 1) 


IAPMO IS 11-87 
IAPMOIS1-91 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


1 628-93 (Notes 1 & 3) 


IAPMO IS 1-91 
IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) 
composite sewer piping 




D 2680-93 


IS 1-91 


Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 1-91 
IAPMO IS 9-95 


Type PSP poly (vinyl chloride) 
(PVC) sewer pipe and fittings 


NSF 14-90 


D 3033-85 (D) 


IAPMO IS 1-91 


Type PSM poly (vinyl chloride) 
(PVC) sewer pipe and fittings 


NSF 14-90 


D 3034-94 


IAPMO IS 1-91 


Poly (vinyl chloride) (PVC) sewer 
pipe and fittings 


NSF 14-90 


D 2729-93 (Note 1) 


IAPMO IS 1-91 


Type PS-46 poly (vinyl chloride) 
(PVC) plastic gravity flow sewer 
pipe and fittings 


NSF 14-90 


F 789-89 (Note 1) 


IAPMO IS 1-91 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a (Notes 1 &3) 


IAPMO IS 1-91 
IAPMO IS 9-95 


Poly (vinyl chloride) (PVC) corrugated sewer 
pipe with a smooth interior and fittings 




F 949-93a 


IAPMO IS 1-91 


Building Drains Above Ground 








Cast iron soil pipe and fittings - hub and spigot 




A 74-93 (Note 1) 


CISPI HSN-85 


Hubless cast iron sanitary system 




C 564-95a 


CISPI 310-90 

CISPI 301-90 (Note 1 

IAPMO IS 6-95) 


Shielded couplings joining hubless cast iron soil 
pipe and fittings 




C 1277-94 




Ductile iron pipe centrifugally cast 
in sand-lined or metal molds 


AWWAC151/ 
A21.51-91 


A 377-89 




Ductile iron or grey iron fittings 


AWWAC110/ 
A21 .10-93 


A 377-89 




Ductile iron compact fittings 


AWWA153/ 
A21. 53-88 






Copper alloy sand casting for general applications 




B 584-93b (Note 5) 




Seamless copper water tube 




B 88-93a 


IAPMO IS 3-93 


Copper drainage tube 




B 306-92 


IAPMO IS 3-93 


Seamless copper tube 




B 75-93 


IAPMO IS 3-93 


Seamless brass tube 




B 135-91 




Cast bronze solder-joint drainage fittings 


ASMEB1 6.23-92 






Wrought copper and copper alloy solder-joint 
drainage fittings 


ASME B1 6.29-86 (Note 1) 




IAPMO IS 3-93 


Steel pipe (galvanized) 


ASMEB36.10-85 


A 53-93a 
A 120-84 (D) 





132 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Cast iron threaded drainage fittings 


ASMEB16.12-91 (Notel) 






Lead pipe and bends 






WW-P 325B-76 


Plastic, ABS 
Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Notel) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Plastic, PVC 
Poly (vinyl chloride) (PVC) plastic drain, 
waste and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a 


IAPMO IS 9-95 


Building Drains - Below Ground 








Cast iron soil pipe and fittings - hub and spigot 




A 74-93 (Notel) 


CISPI HSN-85 


Hubless cast iron sanitary system 




C 564-95a 


CISPI 310-90 

CISPI 301-90 (Notel) 

IAPMO IS 6-95 


Ductile iron pipe centrifugally cast in sand-lined 
or metal molds 


AWWAC151/ 
A21.51-91 


A 377-89 




Ductile iron or grey iron fittings 


AWWAC110/ 
A21 .10-93 


A 377-89 




Ductile iron compact fittings 


AWWAC153/ 
A21 .53-88 






Copper alloy sand casting for general applications 




B 584-93b (Note 5) 




Seamless copper water tube 




B 88-93a 


IAPMO IS 3-93 


Copper drainage tube 




B 306-92 


IAPMO IS 3-93 


Cast bronze solder-joint drainage fittings 


ASMEB1 6.23-92 






Wrought copper and copper alloy solder-joint 
drainage fittings 


ASMEB1 6.29-86 (Notel) 




IAPMO IS 3-93 


Lead pipe and bends 






WW-P-325B-76 


Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Notel) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a 


IAPMO IS 9-95 


Sanitary Drain and Waste - Above Ground 








Cast iron soil pipe and fittings hub and spigot 




A 74-93 (Notel) 


CISPI HSN-85 


Hubless cast iron sanitary system 




C 564-95a 


CISPI 310-90 

CISPI 301-90 (Notel) 

IAPMO IS 6-95 



133 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 


ANSI 


ASTM 


Other 


Ductile iron pipe centrifugally cast in sand-lined 
or metal molds 


AWWAC151/ 
A21.51-91 


A 377-89 




Ductile iron or grey iron fittings 


AWWAC110/ 
A21. 10-93 


A 377-89 




Ductile iron compact fittings 


AWWAC153/ 
A21 .53-88 






Copper alloy sand casting for general applications 




B 584-93b (Note 5) 




Seamless copper water tube 




B 88-93a 


IAPMO IS 3-93 


Copper drainage tube 




B 306-92 


IAPMO IS 3-93 


Cast bronze solder-joint drainage fittings 


ASMEB1 6.23-92 






Wrought copper and copper alloy solder-joint 
drainage fittings 


ASME B1 6.29-86 (Note 1) 




IAPMO IS 3-93 


Cast bronze solder-joint fittings for solvent 
drainage systems 


ASMEB1 6.32-92 






Copper alloy fixture fittings 


ASME 
A1 12.18.1 M-94 






Lead pipe and bends 






WW-P-325B-76 


Steel pipe (galvanized) 


ASME 
B36.10M-85 


A 53-93a 
A 120-84 (D) 




Cast iron threaded drainage fittings 


ASMEB16.12-91 






ABS and PVC piston driven DWV expansion joints 






IAPMO PS 51-92 


Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Note 1) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a 


IAPMO IS 9-95 


Sanitary Drain and Waste - Below Ground 








Cast iron soil pipe and fittings hub and spigot 




A 74-93 (Note 1) 


CISPI HSN-85 



Hubless cast iron sanitary system 

Ductile iron pipe centrifugally cast in sand-lined 
or metal molds 

Ductile iron or grey iron fittings 

Ductile iron compact fittings 

Copper alloy sand casting for general applications 
Seamless copper water tube 



AWWAC151/ 
A21.51-91 

AWWAC110/ 
A21. 10-93 

AWWAC153/ 
A21 .53-88 



A 377-89 



A 377-89 



B 584-93b (Note 5) 
B 88-93a 



CISPI 301-90 (Note 1) 

CISPI 310-90 

IAPMO IS 6-95 



IAPMO IS 3-93 



134 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Copper drainage tube 




B 306-92 


IAPMO IS 3-93 


Cast bronze solder-joint drainage fittings 


ASMEB1 6.23-92 




IAPMO IS 3-93 


Copper flush pipes 


ASMEA112.18.1M-94 






Wrought copper and copper alloy solder-joint 
drainage fittings 


ASME B1 6.29-86 (Note 1) 




IAPMO IS 3-93 


Cast bronze solder-joint fittings for solvent 
drainage systems 


ASMEB1 6.32-92 






Lead pipe, lead traps and bends 






WW-P-325B-76 


Cast iron threaded drainage fittings 


ASME B1 6.1 2-91 (Note 1) 






Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Note 1) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, 
waste and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a 


IAPMO IS 9-95 


JOINING MATERIALS AND METHODS - 
SANITARY DRAINAGE SYSTEMS 








Type "P clamps for plumbing applications 


SAEJ1 670-93 






Rubber gasket joints for ductile-iron and gray-iron 
pressure pipe and fittings 


AWWAC111 
A21. 11-90 






Cast iron soil pipe and fittings hub and spigot 
neoprene compression gaskets, caulking, 
lead wool and lead pig 




C 564-95a 
B 29-92 


CISPI HSN-85 


Threaded joints (IPS) 


ASME B1. 10.1-83 
B1 .20.3-91 






Hubless cast iron sanitary systems neoprene 
gasket and stainless steel shield 




C 564-95a 


CISPI 310-90 

CISPI 301-90 (Note 1) 

IAPMO IS 6-95 


Flexible transition couplings for underground 
piping systems 




C 1173-95 




Shielded transition couplings for use with dissimilar 
DWV pipe and fittings above ground 






IAPMO PS 44-92 


Clay pipe 




C 425-90a 


IAPMO IS 18-85 


Brazing filler metals 


AWS A5.8-92 






Solder metal and wiping solder 




B 32-95a (Note 4) 




Silver brazing joints for wrought and cast 
solder-joint fittings 






MSS-SP-73-91 


Flux brazing 






0-F-499D-85 


Flux soldering 








Seal compound pipe joint and thread 






TT-S-1 732-71 



135 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Plastic DWV, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 

Solvent cement for Acrylonitrile-Butadiene- 
Styrene (ABS) plastic pipe and fittings 

Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 

Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 

Plastic DWV, PVC 

Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 

Solvent cement for poly (vinyl chloride) (PVC) 
plastic pipe and fittings 

Primers for use in solvent cement joints of poly 
(vinyl chloride) (PVC) plastic pipe and fittings 

Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 

Making solvent-cemented joints with poly (vinyl 
chloride)(PVC) pipe and fittings 

Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 

Plastic Sewer, ABS 

Solvent cement for Acrylonitrile-Butadiene- 
Styrene (ABS) plastic pipe and fittings 

Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 

Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 

Underground installation of flexible thermo- 
plastic sewer pipe 

Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 

Plastic Sewer, PVC 

Solvent cement for poly (vinyl chloride) (PVC) 
plastic pipe and fittings 

Primers for use in solvent cement joints of poly 
(vinyl chloride) (PVC) plastic pipe and fittings 

Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 

Underground installation of flexible thermo- 
plastic sewer pipe 

Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 



NSF 14-90 

NSF 14-90 
NSF 14-90 



NSF 14-90 
NSF 14-90 
NSF 14-90 



NSF 14-90 



NSF 14-90 
NSF 14-90 



D 2661 -94a (Note 1) 

F 628-93 (Notes 1 & 3) 

D 2235-93a 

F 402-93 

D 3212-92 

D 2665-94 
D 2564-93 

F 656-93 

F 402-93 
D 2855-93 
D 3212-92 

D 2235-93a 
D 3212-92 
F 402-93 
D 2321-89 
D 3212-92 

D 2564-93 

F 656-93 

F 402-93 
D 2321-89 
D 3212-92 



IAPMO IS 5-92 



IAPMO IS 5-92 

IAPMO IS1 1-87 
IAPMO IS 5-92 



IAPMO IS 5-92 



IAPMO IS 9-95 
IAPMO IS 9-95 

IAPMO IS 9-95 

IAPMO IS 9-95 
IAPMO IS 9-95 



136 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Making solvent-cemented joints with poly (vinyl 
chloride) (PVC) pipe and fittings 




D 2855-93 




Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 




Underground installation of flexible thermo- 
plastic sewer pipe 




D 2321-89 




Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 




D 3212-92 




Plastic stabilizers for use with plastic closet bends 






IAPMO PS 91-95 


Mechanical cast iron closet flanges 






IAPMO PS 97-96 


Pumps - Drainage 








Sewage pump, centrifugal, wet pit 








Sump pumps, vertical, wet pit 






MIL-P-21214B-92 


Sewage Ejectors 








Mechanical and air 








DRAINS - STORM 








Building Storm Sewers 








Joints for circular concrete sewer and culvert 
pipe, using rubber gaskets 




C 443-85a(R90) 




Cast iron soil pipe and fittings hub and spigot 




A 74-93 (Note 1) 
C 564-95a 


CISPI HSN-85 


Hubless cast iron sanitary system 




C 564-95a 


CISPI 301-90 (Note 1) 

CISPI 310-90 

IAPMO IS 6-95 


Flexible transition couplings for underground 
piping systems 




C 1173-95 




Ductile iron pipe centrifugally cast in sand-lined 
or metal molds 


AWWAC151/ 
A21 .51-91 


A 377-89 




Ductile iron or grey iron fittings 


AWWAC110/ 
A21. 10-93 


A 377-89 




Ductile iron compact fittings 


AWWAC153/ 
A21 .53-88 






Clay pipe 




C 700-91 
C 425-90a 


IAPMO IS 1-91 
IAPMO IS 18-85 


Asbestos-cement nonpressure sewer pipe 




C 428-92 (Notes 6 & 7) 




Copper alloy sand casting for general applications 




B 584-93b (Note 5) 




Seamless copper water tube (types K, L and M) 




B 88-93a 


IAPMO IS 3-93 


Copper drainage tube-type DWV 




B 306-92 


IAPMO IS 3-93 


Cast copper alloy solder joint 
drainage fittings 


ASMEB1 6.23-92 




IAPMO IS 3-93 


Wrought copper and copper alloy 
solder-joint drainage fittings 


ASME B1 6.29-86 (Note 1) 




IAPMO IS 3-93 


Concrete sewer, storm drain and culvert pipe 




C 14-92 




Low pressure air test for building sewers 
(Installation) 






IAPMO IS 16-84 



137 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Plastic, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain.waste and vent pipe and fittings 



Acrylonitrile-Butadiene-Styrene (ABS) sewer 
pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 

Acrylonitrile-Butadiene-Styrene (ABS) 
composite sewer pipe 

Plastic, PVC 

Poly (vinyl chloride) (PVC) plastic drain, 
waste and vent pipe and fittings 

Type PSP poly (vinyl chloride) (PVC) sewer 
pipe and fittings 

Type PSM poly (vinyl chloride) (PVC) sewer 
pipe and fittings 

Type PS-46 poly (vinyl chloride) (PVC) 
plastic gravity flow sewer pipe and fittings 

Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 

Poly (vinyl chloride) (PVC) corrugated sewer 
pipe with a smooth interior and fittings 



SUBSOIL DRAINS 

Cast iron soil pipe and fittings hub and spigot 

Hubless cast iron sanitary system 

Clay pipe 

Copper alloy sand casting for general applications 

Seamless copper water tube (types K, L and M) 

Copper drainage tube-type DWV 

Cast bronze solder-joint drainage fittings 

Wrought copper and copper alloy solder-joint 
drainage fittings 

Plastic, PE 

Corrugated polyethylene tubing 

Plastic, SR 

Styrene-rubber (SR) plastic drain pipe, 
perforated-type 

ROOF DRAINS 

Copper and other metallic roof/deck/balcony drains 
Plastic roof drains 



NSF 14-90 



NSF 14-90 
K65.59-71 



NSF 14-90 



NSF 14-90 
NSF 14-90 
NSF 14-90 
NSF 14-90 



D 2661 -94a (Note 1) 

D 2751-93 (Note 1) 

F 628-93 (Notes 1 & 3) 
D 2680-93 

D 2665-94 
D 3033-85 (D) 
D 3034-94 
F 789-89 (Note 1 ) 
F 891 -93a 
F 949-93a 



C 564-95a 
A 74-93 (Note 1) 

C 564-95a 



C 700-91 

B 584-93b (Note 5) 

B 88-93a 

B 306-92 



ASMEB1 6.23-92 



ASME B1 6.29-86 (Note 1; 



A112.21.2M-83 



F 405-93 



D 3298-81 (D) 



M265-811 
IAPMOIS1-91 
IAPMO IS 5-92 

IAPMOIS11-87 
IAPMO IS 1-91 



IAPMO IS 5-92 
IAPMO IS 1-91 



IAPMO IS 1-91 



IAPMO IS 9-95 
IAPMO IS 1-91 



IAPMO IS 1-91 
IAPMO IS 1-91 

IAPMO IS 1-91 

IAPMO IS 1-91 
IAPMO IS 9-95 

IAPMO IS 1-91 



CISPI HSN-85 

CISPI 310-90 

CISPI 301-90 (Note 1) 

IAPMO IS 6-95 

IAPMO IS 18-85 



IAPMO IS 3-93 
IAPMO IS 3-93 
IAPMO IS 3-93 

IAPMO IS 3-93 



IAPMO PS 41-91 
IAPMO PS 47-92 



138 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


JOINING MATERIALS AND METHODS - 
SUBSOIL DRAINS 








Clay pipe (open jointed clay pipe or perforated 
clay pipe) 




C 425.90a 




Caulking lead, wool and lead pig 




B 29-92 




Brazing filler metals 


AWS A5.8-92 






Solder metal and wiping solder 




B 32-95a (Note 4) 




Silver brazing joints for wrought and cast 
solder joint fittings 






MSS-SP-73-91 


Plastic, PE 








Corrugated polyethylene tubing 




F 405-93 




Underground installation of flexible thermo- 
plastic sewer pipe 




D 2321 -89 




Plastic, PVC 








Solvent cements for poly (vinyl chloride) (PVC) 
plastic pipe and fittings 


NSF 14-90 


D 2564-93 


IAPMO IS 9-95 


Primers for use in solvent cement joints of poly 
(vinyl chloride) (PVC) plastic pipe and fittings 


NSF 14-90 


F 656-93 


IAPMO IS 9-95 


Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 


IAPMO IS 9-95 


Underground installation of flexible thermo- 
plastic sewer pipe 




D 2321-89 




Making solvent-cemented joints with poly (vinyl 
chloride) (PVC) pipe and fittings 




D 2855-93 


IAPMO IS 9-95 


Plastic, SR 








Solvent cement for styrene-rubber (SR) plastic 
pipe and fittings 




D 3122-93 




Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 




Underground installation of flexible thermo- 
plastic sewer pipe 




D 2321 -89 




FIXTURES AND TRIM - PLUMBING 








Plumbing fixtures, general specification 






WW-P-541- 
E-Gen.1980 


Drains for prefabricated and precast showers 






IAPMO PS 4-95 


Porous filter protector for sub-drain weep holes 






IAPMO PS 100-96 


Prefabricated fiberglass church baptistries 






IAPMO PS 98-96 


Bathwaste strainer drains 






IAPMO PS 55-92 


Plastic bathwaste and overflow assemblies 






IAPMO PS 69-93 


Bathtub/whirlpool bathtubs with pressure sealed doors 






IAPMO PS 70-93 


Electronic controlled showers 






IAPMO PS 71-93 


Flexible metallic water connectors 






IAPMO PS 14-89 


Non-Vitreous Ceramic Plumbing Fixtures 


ASME 
A112.19.9M-91 







139 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Plumbing fixtures, stainless steel 
Shower heads and water control valves 

Water flow control devices 

Showers, plastic 

Showers, terrazzo 

Shower pans-sheet lead, grade B, 4 lb. min. 

Shower units, chlorinated polyethylene sheeting 

Subdrains for built-up shower pans 

Tile-Lined shower receptors (and replacements) 
(Installation) 

Load bearing, bonded, waterproof membranes for 
thin-set ceramic tile and dimension 
stone installations 

Poly (vinyl chloride) (PVC) plastic flexible concealed 
water-containment membranes 

Sinks, kitchen, service 

Sinks, Plastic 
Sinks, terrazzo 
Laundry tubs 

Supports for off-the-floor plumbing fixtures with or 
without concealed tanks 

Supports for off-floor plumbing fixtures for public use 
Urinals 

Water Closets 

Vitreous china 

Plastic 

Water closet trim 

Plastic Toilet (Water Closet) Seats 

Water closet seats with spray 

Hydraulic Requirements for Water Closets & Urinals 

Fabricated stainless steel security water closets 
Electrohydraulic water closets 



ASME 
A112.19.3M-87 

ASME 
A112.18.1M-94 
ASSE 1016-90 
ASSE 1017-86 



Z1 24.2-95 



A1 18.10-93 



ASME 
A112.19.1M-87 

Z1 24.6-90 



ASME 
A1 12.1 9.1 M-87 



ASME 
A1 12.6.1 M-88 

ASME 

A112.19.2M-95 

Z1 24.9-94 (Note 1) 



ASME 
A112.19.2M-95 

Z1 24.4-86 
Z124.4a-90 

A1 12.1 9.5-79 

Z1 24.5-89 



ASME 
A1 12.1 9.6-90 



D 4068-91 



D 4551-91 



ASSE 1028-81 
ASSE 1034-81 



IAPMO PS 99-96 

00-L-201 
f-70 



IAPMO PS 16-90 
IAPMO IS 4-96 



IAPMO PS 99-96 



IAPMO PS 58-92 



IAPMO PS 93-95 



IAPMO PS 61-92 
IAPMO PS 77-95 



140 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Dual flush for electrohydraulic and gravity 6 liter 
(1 .6 gallons) water closet 






IAPMO PS 78-95 


Whirlpool Bathtubs 

Appliances 


ASME 
A112.19.7M-95 






Suction fittings 


ASME 
A112.19.8M-87 






Soaking and hydrotherapy (whirlpool) bathtubs 
with hydraulic seatlift 






IAPMO PS 89-95 


Bathtubs 








Cast iron 


ASME 
A112.19.1M-87 






Steel 


ASME 
A112.19.4M-94 






Plastic 


Z124.1-95 






Terrazzo 






IAPMO PS 99-96 


Built-Up Fixtures 








Roman tubs 






IAPMO IS 2-92 


Drinking fountains and drinking water coolers 


ARI 1010-84 
UL 399-92 






Plumbing fixture fittings 


ASME 
A1 12.18.1 M-94 






Bathtub three-way diverter valves 
with backflow protection 






IAPMO PS 45-91 


Backflow prevention requirements for fixture fittings 
with hose connected singular moveable outlets 






IAPMO PS 49-92 


Fixture supply and drains 


ASME 
A1 12.18.1 M-94 






Floor drains 


ASME 
A1 12.21.1 M-91 (Notel) 






Enameled cast iron sanitary floor sinks 






IAPMO PS 62-93 


Epoxy coated cast iron sanitary floor sinks 






IAPMO PS 83-95 


PVC plastic sanitary floor sinks 






IAPMO PS 84-95 


Flushometers 








Pressurized flushing devices 


ASSE 1037-90 




MIL-V-29193-80(D) 


Lavatories 








Vitreous china 


ASME 
A112.19.2M-95 






Cast iron 


ASME 
A1 12.1 9.1 M-87 






Steel, enamel 


ASME 
A112.19.4M-94 






Plastic and cultured marble 


Z1 24.3-95 






Steel, stainless 


ASME 
A112.19.3M-87 






Utility Hydrants 


ASME 
A1 1 2.21 .3M-85 (Notel) 







141 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Wall hydrants, anti-freeze-type 
with vacuum breaker 

Accessibility Standard 



HANGERS AND SUPPORTS - PIPING 

Plastic Waste, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste, and vent pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste, and vent pipe having a 
foam core 

Drain, waste, and vent hangers 

Plastic Waste, PVC 

Poly (vinyl chloride) (PVC) plastic drain, waste, 
and vent pipe and fittings 

Drain, waste, and vent hangers 

Plastic Water Distribution Piping, CPVC 

Chlorinated poly (vinyl chloride) CPVC plastic 
hot-and cold-water distribution system 

Supports for off-the-floor plumbing fixtures for 
public use 

INDIRECT WASTE PIPING AND 
SPECIAL WASTE 

Indirect Waste Piping 

Cast iron soil pipe and fittings - hub and spigot 

Hubless cast iron sanitary 
system coupling 

Steel pipe (galvanized) 

Cast iron threaded drainage fittings 

Copper alloy sand casting for general applications 

Seamless copper water tube 

Copper drainage tube 

Cast bronze solder-joint drainage fittings 

Wrought copper and copper alloy solder-joint 
drainage fittings 

Plastic, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 

Plastic, PP 

Polypropylene (PP) pipe and fittings (Sch. 40 
and 80) 



ASSE 1019-95 
CABOA1 17.1-92 



NSF 14-90 



NSF 14-90 



NSF 14-90 



NSF 14-90 

ASME 
A11 2.6.1 M-88 



D 2661 -94a (Note 1) 



F 628-93 (Notes 1 & 3) 



D 2665-94 



D 2846-93 



ASME B1 6.23-92 



ASME B1 6.29-86 (Note 1) 



NSF 14-90 



NSF 14-90 



NSF 14-90 



A 74-93 (Note 1) 



A 53-93a 
A 120-84 (D) 

A 126-93 

B 584-93b (Note 5) 

B 88-93a 

B 306-92 



D 2661 -94a (Note 1) 



F 628-93 (Notes 1 & 3) 



D 2146-82 (D) 



MSS SP-58-93 

IAPMO IS 5-92 

IAPMO IS 5-92 
IAPMO PS 95-96 

IAPMO IS 9-95 
IAPMO PS 95-96 



CISPI HSN-85 

CISPI 301-90 (Note 1) 
CISPI 310-90 
IAPMO IS 6-95 



IAPMO IS 3-93 
IAPMO IS 3-93 
IAPMO IS 3-93 

IAPMO IS 3-93 

IAPMO IS 5-92 
IAPMO IS 5-92 



142 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Plastic, PVC 








Poly (vinyl chloride)(PVC) plastic drain, waste 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a 


IAPMO IS 9-95 


Special Waste Piping 








Chemical 








Clay pipe 




C 700-91 


IAPMO IS 18-85 


Lead pipe 




C 425-92a 


WW-P-325B-76 


Glass 






MIL-P-22561-82(D) 


Borosilicate glass pipe and fittings for drain, 
waste and vent (DWV) applications 




C 1053-90 (Note 1) 




Corrosion-resistant high silicon cast iron 
hub and spigot 




A 518-92 




High-Silicon Iron Pipe and Fittings 




A 861-92 (Note 1) 




Fiberglass (glass fiber reinforced 
thermosetting resin) fittings 






IAPMO PS 82-95 


Plastic, ABS 








Acrylonitrile-Butadiene-Styrene 
(ABS) Sch. 40 plastic drain, 
waste and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Note 1) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene 
(ABS) Sch. 40 plastic drain, 
waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Plastic, PP 








Polypropylene (PP) pipe and 
fittings (Sch.40 and 80) 


NSF 14-90 


D 2146(D) 




Polyolefin pipe and fittings for corrosive waste 
drainage systems 




F 1412-94 




Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic 
drain, waste and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a 


IAPMO IS 9-95 


Corrosive waste piping 








Clay pipe 




C 700-91 


IAPMO IS 18-85 


Lead pipe 




C 425-90a 


WW-P-325B-76 


Glass 






MIL-P-22561 -82(D) 


Borosilicate glass pipe and fittings for drain, 
waste and vent (DWV) applications 




C 1053-90 (Note 1) 




Corrosion-resistant high silicon cast iron 
hub and spigot 




A 51 8-92 




Fiberglass (glass fiber reinforced 
thermosetting resin) fittings 






IAPMO PS 82-95 


High-Silicon Iron Pipe and Fittings 




A 861 -92 (Note 1) 





143 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Plastic, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) 
Sch. 40 plastic drain, waste and vent pipe 
and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) 
Sch. 40 plastic drain, waste and vent pipe 
having a foam core 

Plastic, PP 

Polypropylene (PP) pipe and fittings (Sch. 
40 and 80) 

Polyolefin pipe and fittings for corrosive waste 
drainage systems 

Plastic, PVC 

Poly (vinyl chloride) (PVC) plastic drain, 
waste and vent pipe and fittings 

Industrial 

Cast iron soil pipe and fittings - hub and spigot 

Hubless cast iron sanitary system coupling 



Corrosion-resistant high silicon cast iron hub 
and spigot 

Fiberglass (glass fiber reinforced 
thermosetting resin) fittings 

Steel pipe (galvanized) 



Cast iron threaded drainage fittings 

Clay pipe 

Lead pipe 

Plastic, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 

Plastic, PP 

Polypropylene (PP) pipe and fittings (Sch. 40 
and 80) 

Polyolefin pipe and fittings for corrosive waste 
drainage systems 

Plastic, PVC 

Poly (vinyl chloride) (PVC) plastic drain, 
waste and vent pipe and fittings 

Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 



NSF 14-90 



NSF 14-90 



NSF 14-90 



NSF 14-90 



D 2661 -94a (Note 1) 
F 628-93 (Notes 1 & 3) 

D 2146(D) 
F 1412-94 

D 2665-94 
A 74-93 (Note 1) 



IAPMO IS 5-92 



IAPMO IS 5-92 



B125.1 



ASMEB1 6.1 2-91 (Notel) 



NSF 14-90 



NSF 14-90 



NSF 14-90 



NSF 14-90 



A 518-92 



A 53-93a 
A 120-84 (D) 

A 126-93 

C 700-91 

C 425-90a 



D 2661 -94a (Notel) 
F 628-93 (Notes 1 & 3) 

D 2146(D) 
F 1412-94 

D 2665-94 
F 891 -93a 



IAPMO IS 9-95 



CISPI HSN-85 

CISPI 301-90 (Note 4) 
CISPI 310-90 
CISPI HSN-85 
IAPMO IS 6-95 



IAPMO PS 82-95 



IAPMO IS 18-85 
WW-P-325B-76 



IAPMO IS 5-92 



IAPMO IS 5-92 



IAPMO IS 9-95 
IAPMO IS 9-95 



144 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


JOINING METHODS - INDIRECT WASTE 
PIPING AND SPECIAL WASTE 








Type T" clamps for plumbing applications 


SAE J 1670-93 






Corrosion-resistant high silicon cast iron hub 
and spigot 




A 51 8-92 




Fiberglass (glass fiber reinforced 
thermosetting resin) fittings 






IAPMO PS 82-95 


Cast iron soil pipe and fittings hub and spigot - 
neoprene gaskets, compression caulking, 
lead wool and lead pig 




A 74-93 (Note 1) 


CISPI HSN-85 


Hubless cast iron sanitary system neoprene 
gasket and stainless steel shield 




C 564-95a 


CISPI 301-90 
CISPI 310-90 
IAPMO IS 6-95 


Clay pipe 




C 425-90a 


IAPMO IS 18-85 


Silver brazing joints for wrought and cast bronze 
solder joint fittings 


A1 06.6-77 




MSS-SP-73-91 


Solder metal 




B 32-95a (Note 4) 




Brazing filler metal 


AWS A5.8-92 






Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Note 1) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Solvent cement for Acrylonitrile-Butadiene- 
Styrene (ABS) plastic pipe and fittings 


NSF 14-90 


D 2235-93a 




Joints for drain and sewer plastic pipes using 
flexible thermoplastic sewer pipe 




D 3212-92 




Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 




Plastic, PP 








Practice for heating joining of thermal plastic 
pipe and fittings 




D 2657-90 




Polypropylene (PP) pipe and fittings (Sch. 40 
and 80) 


NSF 14-90 


D 2146-82 (D 




Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Solvent cement for poly (vinyl chloride) (PVC) 
plastic pipe and fittings 


NSF 14-90 


D 2564-93 


IAPMO IS 9-95 


Primers for use in solvent cement joints of poly 
(vinyl chloride) (PVC) plastic pipe and fittings 


NSF 14-90 


F 656-93 


IAPMO IS 9-95 


Making solvent-cemented joints with poly (vinyl 
chloride) (PVC) pipe and fittings 




D 2855-93 


IAPMO IS 9-95 


Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 


IAPMO IS 9-95 


Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 




D 3212-92 





145 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



INTERCEPTORS AND BACKWATER 
VALVES 

Interceptors 

Grease 
(Grease Traps) 

Grease interceptors and clarifiers 

Sand 

Oil 

Rainwater diverter valve for non-roofed area slabs 

Backwater Valves 

Acrylonitrile-butadiene-styrene (ABS) and poly 
(vinyl chloride) (PVC) backwater valves 

MANHOLES 

MEDICAL GAS AND VACUUM SYSTEMS 

Medical Gas Systems 

Medical - Surgical Vacuum Systems 



JOINING MATERIALS AND METHODS - 
MEDICAL GAS PIPING 

Seamless copper tube for medical gas systems 

Brazing filler metal 

Certified Brazing 



A112.14.1-75(Rev.90) 



MISCELLANEOUS 

National fuel gas code 

Energy efficient design of new buildings except 
low-rise residential buildings 

Proportional chemical dispensers with 
backflow protection 

Ballcock or flushometer valve tailpiece trap primers 
and trap primer receptors/adapters 

Multiport electronic trap primer 

Diverters for faucets with antisiphon 

Hand-held water connected shower devices 

Water closet flush tank ballcocks 

Fixture mounted hot water dispensers 



NFPA 99-93 
NFPA 99C-93 

NFPA 99-93 
NFPA 99C-93 



AWS A5.8-92 



Z223.1-92/ 
NFPA 54 



ASHRAE 90.1-89 



ASSE 1025-78 
ASSE 1014-90 
ASSE 1002-86 
ASSE 1023-79 



C 478-90b 



B 819-92 



PDIG-101-85 
IAPMO PS 13-89 (Note 2) 

IAPMO PS 80-95 



PDIG-101-85 
IAPMO PS 8-77 (D) 

IAPMO PS 86-95 



IAPMO PS 38-91 



AWS B2.2. 

ASME Section IX 

Boiler and Pressure 

Vessel Code 



IAPMO PS 75-95 

IAPMO PS 76-95 
IAPMO PS 79-95 



146 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Dishwasher drain air gap 


AHAMDW-1-92 




ASSE 1021-77 


Accessible and usable buildings and facilities 


CABOA117.1-92 






General requirements for wrought seamless copper 
and copper-alloy tube 




B 251-93 




Welded Copper Tube 




B 447-93 




Copper sheet and strip for building construction 




B 370-92 




Copper sheet, strip, plate, and rolled bar 




B 152-94 




General requirements for steel sheet, zinc-coated 
(galvanized) by the hot-dip process 




A 525-93 




Seamless copper tube for air conditioning and 
refrigeration field service 




B 280-93a 




Schemes for identification of piping systems 


A13.1-81(R93) 






Threaded joints 


B2.1-90 






Drinking water treatment units - aesthetic effects 


NSF 42-88 






Drinking water treatment units - health effects 


NSF 53-94 






Reverse osmosis drinking water treatment systems 


NSF 58-96 






Liquified petroleum gases, storage and handling 


NFPA 58-92 






Welded and seamless carbon steel and austenitic 








stainless steel pipe nipples 




A 733-89 




Brass-, copper-, and chromium-plated pipe nipples 




B 687-88©1 




Thermoplastic gas pressure pipe tubing and fittings 




D 251 3-94a (Note 1) 


IAPMO IS 12-93 


Anodeless transition riser for use with 








polyethylene and PVC gas yard piping 






IAPMO PS 40-91 


Thermoplastic well casing pipe and couplings made 
in standard dimension ratios (SDR) schedule 40 
and schedule 80 




F 480-94 




Asbestos cement pressure pipe for water sen/ice 
and yard piping (Installation) 






IAPMO IS 15-82 


Special cast iron fittings 






IAPMO PS 5-84 


Tubing trap wall adapters 






IAPMO PS 7-84 


Diversion tees and twin waste elbows 






IAPMO PS 9-84 


Pipe flashings 






IAPMO PS 64-93 


Smoothwall polyethylene (PE) pipe for use in 
drainage and waste disposal absorption fields 




F 810-93 




PUMPS 








Sump Pumps 








Sewage pumps 






MIL-P- 

21251B-81 (D) 

SSPMA-85 


Vertical sump pumps 






MIL-P- 
21214B-92 
SSPMA-85 


Pumps - Water 








Motor-operated water pumps 


UL 778-91 







147 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Centrifugal - general service 
Submersible, axial flow, electric motor driven 

Shallow-well pumps 



BUILDING SEWER - COMBINED 

Cast iron soil pipe and fittings hub and spigot 
Hubiess cast iron sanitary system 



Ductile iron pipe centrifugally cast in sand-lined or 
metal molds 

Ductile iron or grey iron fittings 



Ductile iron compact fittings 

Clay pipe 

Copper alloy sand casting for general applications 

Seamless copper water tube (types K, L and M) 

Copper drainage tube (DWV) 

Cast bronze solder joint drainage fittings 

Wrought copper and copper alloy-solder joint 
drainage fittings 

Plastic, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) sewer 
pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 



Acrylonitrile-Butadiene-Styrene (ABS) 
composite sewer pipe 

Plastic, PVC 

Poly (vinyl chloride) (PVC) plastic drain waste 
and vent pipe and fittings 

Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 

Type PSP poly (vinyl gravity flow chloride) 
(PVC) sewer pipe and fittings 

Type PSM poly (vinyl chloride) (PVC) sewer 
pipe and fittings 

Type PS-46 poly (vinyl chloride) (PVC) plastic 
gravity flow sewer pipe and fittings 



AWWAC151/ 
A21.51-91 

AWWAC110/ 
A21. 10-93 

AWWAC153/ 
A21 .53-88 



A 74-93 (Note 1) 
C 564-95a 

A 377-89 
A 377-89 



C 700-91 
C 425-90a 

B 584-93b (Note 5) 

B 88-93a 

B 306-92 



ASMEB1 6-23-92 



ASME B1 6.29-86 (Note 1) 



NSF 14-90 



NSF 14-90 



MIL-P-62156 
(1)-1 983(D) 

MIL-P-52407 
(A)-1 976(D) 



CISPI HSN-85 

CISPI 301-90 (Note 1) 
IAPMO IS 6-95 
CISPI 310-90 



NSF 14-90 

NSF 14-90 
NSF 14-90 
NSF 14-90 



D 2661 -94a (Note 1) 
D 2751-93 (Note 1) 

F 628-93 (Notes 1 & 3) 

D 2680-93 

D 2665-94 (D) 

F 891 -93a 
D 3033-85 (D) 

D 3034-94 
F 789-89 (Note 1) 



IAPMO IS 1-91 
IAPMO IS 18-85 



IAPMO IS 3-93 
IAPMO IS 3-93 
IAPMO IS 3-93 

IAPMO IS 3-93 



IAPMO IS 5-92 
IAPMO IS 1-91 

IAPMO IS1 1-87 
IAPMO IS 1-91 



IAPMO IS 1-91 
IAPMO IS 5-92 

IAPMO IS 1-91 



IAPMO IS 9-95 
IAPMO IS 1-91 

IAPMO IS 1-91 
IAPMO IS 9-95 



IAPMO IS 1-91 
IAPMO IS 1-91 
IAPMO IS 1-91 



148 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


INTERIOR STORM DRAINS - 
ABOVE GROUND 








Cast iron soil pipe and fitting hub and spigot 




C 564-95a 
A 74-93 (Note 1) 


CISPI HSN-85 


Shielded couplings joining hubless cast iron soil 
pipe and fittings 




C 1277-94 




Hubless cast iron sanitary systems 




C 564-95a 


CISPI 310-90 

CISPI 301-90 (Note 1) 

IAPMO IS 6-95 


Ductile iron pipe centrifugally cast in sand-lined 
or metal molds 


AWWAC151/ 
A21 .51-91 


A 377-89 




Ductile iron or grey iron fittings 


AWWAC110/ 
A21. 10-93 


A 377-89 




Ductile iron compact fittings 


AWWAC153/ 
A21 .53-88 






Copper alloy sand casting for general applications 




B 584-93b (Note 5) 




Seamless copper water tube (types K, L and M) 




B 88-93a 


IAPMO IS 3-93 


Copper drainage tube (type DWV) 




B 306-92 


tAPMO IS 3-93 


Cast copper alloy solder joint drainage fittings 


ASMEB1 6.23-92 




IAPMO IS 3-93 


Wrought copper and copper alloy solder-joint 
drainage fittings 


ASME B1 6.29-86 (Note 1) 




IAPMO IS 3-93 


Lead pipe 






WW-P-325B -76 


Steel pipe (galvanized) 


ASMEB36.10M-85 


A 53-93a 
A 120-84 (D) 




Cast iron threaded drainage fittings 


ASME B1 6.1 2-91 (Note 1) 






ABS and PVC piston driven DWV expansion joints 






IAPMO PS 51-92 


Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Note 1) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a 


IAPMO IS 9-95 


BUILDING STORM DRAINS - 
BELOW GROUND 








Cast iron soil pipe and fittings hub and spigot 




C 564-95a 
A 74-93 (Note 1) 


CISPI HSN-85 


Hubless cast iron sanitary system 




C 564-95a 


CISPI 301-90 (Note 1) 

CISPI 310-90 

IAPMO IS 6-95 



149 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Ductile iron pipe centrifugally cast in sand-lined 
or metal molds 

Ductile iron or grey iron fittings 



Ductile iron compact fittings 

Clay pipe 

Copper alloy sand casting for general applications 

Seamless copper water tube (types K, L, and M) 

Copper drainage tube (type DWV) 

Cast copper alloy solder-joint drainage fittings 

Wrought copper and copper alloy solder-joint 
drainage fittings 

Lead pipe and bends 

Plastic, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 

Plastic, PVC 

Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 

Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 



JOINING MATERIALS AND METHODS - 
STORM DRAIN 

Type "P clamps for plumbing applications 

Cast iron soil pipe and fittings hub and spigot 

Neoprene gaskets, compression 

Caulking, lead wool and lead pig 

Hubless cast iron sanitary systems neoprene 



Shielded transition couplings for use with dissimilar 
DWV pipe and fittings above ground 

Clay pipe 

Brazing filler metals 

Solder metal and wiping solder 

Silver brazing joints for wrought and cast iron- 
solder joint fillings 

Flux, brazing 

Flux, soldering 



AWWAC151/ 
A21.51-91 

AWWAC110/ 
A21. 10-93 

AWWAC153/ 
A21 .53-88 



A 377-89 
A 377-89 



C 700-91 
C 425-90a 

B 584-93b (Note 5) 

B 88-93a 

B 306-92 



ASMEB1 6.23-92 



ASME B1 6.29-86 (Note 1) 



NSF 14-90 



NSF 14-90 



NSF 14-90 



SAE J 1670-93 



AWS A5.8-92 



D 2661 -94a (Note 1) 



F 628-93 (Notes 1 & 3) 



D 2665-94 



F 891 -93a 



C 564-95a 

B 29-92 
C 564-95a 



C 425-90a 



B 32-95a (Note 4) 



IAPMO IS 18-85 

IAPMO IS 3-93 
IAPMO IS 3-93 
IAPMO IS 3-93 

IAPMO IS 3-93 
WW-P-325B-76 

IAPMO IS 5-92 
IAPMO IS 5-92 

IAPMO IS 9-95 
IAPMO IS 9-95 



CISPI HSN-85 



CISPI 301-85 (Note 1) 

CISPI 301-90 (Note 1) 

CISPI 310-90 

IAPMO IS 6-95 



IAPMO PS 44-92 
IAPMO IS 18-85 



MSS-SP-73-91 

0-F-499d-85 

O-F-506C-72 (D) 



150 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Seal, compound pipe joint and thread 






TT-S-1 732-71 


Rubber gasket joints for ductile-iron and gray-iron 
pressure pipe and fittings 


AWWAC111/ 
A21. 11-90 






Plastic DWV, ABS 








Acryionitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Note 1) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Solvent cement for Acrylonitrile-Butadiene- 
Styrene (ABS) plastic pipe and fittings 


NSF 14-90 


D 2235-93a 


IAPMO IS1 1-87 


Solvent Cements for Acrylonitrile-Butadiene- 
Styrene (ABS) plastic pipe and fittings 


NSF 14-90 


D 2564-93 


IAPMO IS 8-95 


Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 




D 3212-92 




Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 


IAPMO IS 8-95 


Plastic DWV, PVC 








Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Primers for use in solvent cement joints of poly 
(vinyl chloride) (PVC) plastic pipe and fittings 


NSF 14-90 


F 656-93 


IAPMO IS 9-95 


Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 


IAPMO IS 9-95 


Making solvent-cemented joints with poly (vinyl 
chloride) (PVC) pipe and fittings 




D2855-93 


IAPMO IS 9-95 


Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 




D 3212-92 




Plastic Sewer, ABS 








Solvent cement for Acrylonitrile-Butadiene- 
Styrene (ABS) plastic pipe and fittings 


NSF 14-90 


D 2235-93a 


IAPMO IS1 1-87 


Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 




D 321 2-92 




Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 




Underground installation of flexible 
thermoplastic sewer pipe 




D 2321-89 




Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 




D 3212-92 




Plastic Sewer, PVC 








Solvent cements for poly (vinyl chloride) (PVC) 
plastic pipe and fittings 


NSF 14-90 


D 2564-93 




Primers for use in solvent cement joints of poly 
(vinyl chloride) (PVC) plastic pipe and fittings 


NSF 14-90 


F 656-93 




Safe handling of solvent cements and primers 
used for joining thermo-plastic pipe and fittings 




F 402-93 




Underground installation of flexible thermo- 
plastic sewer pipe 




D 2321-89 





151 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Joints for drain and sewer plastic pipes using 
flexible elastomeric seals 

Making solvent-cemented joints joints with poly 
(vinyl chloride) (PVC) pipe and fittings 

Plastic Sewer, SR 

Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 

Joints for drain and sewer plastic pipe using 
flexible elastomeric seals 

Underground installation of flexible thermo- 
plastic sewer pipe 



TRAPS AND CLEANOUTS 

Traps 

P-Trap, supply stop and riser insulated protector 

Copper alloy 

Cast iron 

Lead 

Malleable iron 
Plastic 
Plastic, ABS 

Thermoplastic accessible and replaceable 
plastic tube and tubular fittings 

Drain, waste, and vent (DWV) plastic 
fittings patterns 

Acrylonitrile-Butadiene-Styrene (ABS) 
Sch. 40 plastic drain, waste, and vent pipe 
and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) 
plastic drain, waste, and vent pipe having 
a foam core 

Plastic, PP 

Thermoplastic accessible and replaceable 
plastic tube and tubular fittings 

Plastic, PVC 

Thermoplastic accessible and replaceable 
plastic tube and tubular fittings 

Drain, waste, and vent (DWV) plastic 
fittings patterns 

Poly (vinyl chloride) (PVC) plastic drain, 
waste, and vent pipe and fittings 

Cleanouts - Plugs 

Metal 



ASMEB1 6.23-92 

ASME 
A1 12.18.1 M-94 



ASME B1 6.3-92 
NSF 14-90 

NSF 14-90 



NSF 14-90 



NSF 14-90 



NSF 14-90 



NSF 14-90 



NSF 14-90 



ASME 
A112.36.2M-91 (Notel) 



D 3212-92 
D 2855-93 

F 402-93 
D 3212-92 
D 2321 -89 



A 74-93 (Notel) 

A 197-87 (R-92) 
F 409-93 (Notel) 

F 409-93 (Notel) 
D 331 1-92 

D 2661 -94a (Notel) 

F 628-93 (Notes 1 & 3) 

F 409-93 (Notel) 

F 409-93 (Notel) 

D 3311-92 (Notel) 

D 2665-94 



IAPMO PS 94-96 

*IAPMO PS 2-89 

* Applies to bronze trap 

IAPMO IS 3-93 

CISPI 301-90 
(Notel) 

WW-P-325B-76 



IAPMO IS 5-92 



IAPMO IS 5-92 



IAPMO IS 9-95 



152 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Cast iron 




A 74-93 (Note 1) 


CISPI 301-85 (Note 1 


Copper alloy 


ASMEB1 6.23-92 






Copper alloy sand casting for general applications 




B 584-93b (Note 5) 




Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste, and vent pipe and fittings 


NSF 14-90 


D 2661 -94a (Note 1) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste, and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Drain, waste, and vent (DWV) plastic 
fittings patterns 




D 3311-92 (Note 1) 




Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, waste, 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Wrought copper and copper alloy 
solder-joint drainage fittings 


ASMEB1 6.23-92 
ASME B1 6.29-86 (Note 1) 




IAPMO IS 3-93 


Cast bronze solder-joint fittings 
for solvent drainage systems 


ASMEB1 6.32-92 






Lead pipe 






WW-P-325B-76 


Steel pipe (galvanized) 


B 125. 1-84 
B125.2 


A 53-93a 
A 120-84 (D) 




Malleable iron threaded fittings 


ASME B1 6.3-92 


A197-87(R-92) 




Cast iron threaded fittings 


ASME B1 6. 12-91 (Note 1) 


A 126-93 




Elastomeric test caps/cleanout caps 






IAPMO PS 90-95 


Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 




D 2661 -94a (Note 1) 


IAPMO IS 5-92 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 




F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, 
waste and vent pipe and fittings 


NSF 14-90 


D 2665-94 




VENTS AND VENTING 








Vents - Below Ground 








Cast iron soil pipe and fittings hub and spigot 




C 564-95a 
A 74-93 (Note 1) 


CISPI HSN-85 


Hubless cast iron sanitary system 






CISPI 310-90 

CISPI 301-90 (Note 1) 

IAPMO IS 6-95 


Ductile iron pipe centrifugally cast in sand-lined 
or metal molds 


AWWAC151/ 
A21 .51-91 


A 377-89 




Ductile iron or grey iron fittings 


AWWAC110/ 
A21. 10-93 


A 377-89 





153 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Ductile iron compact fittings 

Copper alloy sand casting for general applications 

Seamless copper water tube (types K, L and M) 

Copper drainage tube (type DWV) 

Wrought copper and copper alloy solder-joint 
drainage fittings 

Cast copper alloy solder-joint fittings for solvent 
drainage systems 

Lead pipe 

Cast iron threaded fittings 

Plastic, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 

Plastic, PVC 

Poly (vinyl chloride) (PVC) plastic drain, 
waste and vent pipe and fittings 

Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 

JOINING MATERIALS AND METHODS - 
SANITARY VENTS 

Type U P clamps for plumbing applications 

Cast iron soil pipe and fittings hub and spigot 
neoprene compression gaskets, caulking, 
lead wool and lead pig 

Rubber gasket joints for ductile-iron and gray and 
iron pressure pipe and fittings 

Hubless cast iron sanitary systems neoprene 
gasket and stainless steel shield 

Brazing filler metals 

Solder metal and wiping solder 

Silver brazing joints for wrought and cast 
solder joint 

Flux, brazing 

Flux, soldering 

Seal compound pipe joint and thread 

Threaded joints (IPS) 

Dryseal Pipe Threads (Inch) 

Plastic, ABS 

Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe and fittings 



AWWAC153/ 
A21 .53-88 



B 584-93b (Note 5) 
B 88-93a 
B 306-92 



ASME B1 6.29-86 (Note 1) 
ASMEB1 6.32-92 

ASMEB16.12-91 (Note 1) 

NSF 14-90 
NSF 14-90 



NSF 14-90 



A 126-93 



D 2661 -94a (Note 1) 



F 628-93 (Notes 1 & 3) 



D 2665-94 



F 891 -93a 



IAPMO IS 3-93 
IAPMO IS 3-93 

IAPMO IS 3-93 



WW-P-325B-76 



IAPMO IS 5-92 



IAPMO IS 5-92 



IAPMO IS 9-95 



IAPMO IS 9-95 



SAE J 1670-93 



AWWAC111/A21. 11-90 



AWS A5.8-92 



C 564-95a 
B 29-92 



C 564-95a 



B 32-95a (Note 4) 



ASME B1 .20.1 -83 (R-92) 
ASME B1 .20.3-91 



NSF 14-90 



D 2661 -94a (Note 1) 



CISPI HSN-85 



CISPI 310-90 

CISPI 301-90 (Note 1) 

IAPMO IS 6-95 



MSS-SP-73-91 
0-F-499D-85 



TT-S-1 732-71 



IAPMO IS 5-92 



154 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Acrylonitrile-Butadiene-Styrene (ABS) Sch. 40 
plastic drain, waste and vent pipe having a 
foam core 


NSF 14-90 


F 628-93 (Notes 1 & 3) 


IAPMO IS 5-92 


Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 




Solvent cement for Acrylonitrile-Butadiene- 
Styrene (ABS) plastic pipe and fittings 


NSF 14-90 


D 2235-93a 


IAPMO IS 5-92 


Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic drain, waste 
and vent pipe and fittings 


NSF 14-90 


D 2665-94 


IAPMO IS 9-95 


Coextruded poly (vinyl chloride) (PVC) plastic 
pipe with a cellular core 




F 891 -93a 


IAPMO IS 9-95 


Solvent cement for poly (vinyl chloride) (PVC) 
plastic pipe and fittings 


NSF 14-90 


D 2564-93 


IAPMO IS 9-95 


Primers for use in solvent cement joints of poly 
(vinyl chloride) (PVC) plastic pipe and fittings 


NSF 14-90 


F 656-93 


IAPMO IS 9-95 


Making solvent-cemented joints with poly (vinyl 
chloride) (PVC) pipe and fittings 




D 2855-93 


IAPMO IS 9-95 


Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 




F 402-93 


IAPMO IS 9-95 


WATER SUPPLY SYSTEMS 








Water Service 








Asbestos-cement pressure pipe 




C 296-93 




Asbestos-cement distribution pipe, 4 in. through 
16 in. (100 mm through 400 mm) for water 
distribution systems 


AWWA C400-93 






Ductile iron pipe centrifugally cast in metal 
or sand-lined molds 


AWWAC151/ 
A21.51-91 


A 377-89 




Ductile iron or grey iron fittings 


AWWA C1 10/ 
A21 .10-93 


A 377-89 




Ductile iron compact fittings 


AWWA C1 53/ 
A21 .53-88 






Gray Iron Threaded Fittings 


ASMEB1 6.4-92 






Grooved-type mechanical couplings and fittings 
for cast iron pipe and ductile iron pipe 


AWWA C606-87 






Copper alloy sand casting for general applications 




B 584-93b (Note 5) 




Seamless copper pipe 




B 42-93 




Seamless red brass pipe 




B 43-94 




Seamless copper water tube 




B 88-93a 


IAPMO IS 3-93 


Reinforced thermo setting resin pipe 


NSF 14-90 


D 2996-88 




Threadless copper pipe 




B 302-92 




Cast copper alloy threaded fittings, 125 and 
250 class 


ASMEB16.15-85 






Cast copper alloy threadless fittings 






MIL-F-1183-83[D] 



155 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 


ANSI 


ASTM 


Other 


Cast copper alloy solder-joint pressure fittings 


ASME B1 6.1 8-84 (Note 1) 




IAPMO IS 3-93 


Cast copper alloy fittings for flared copper tubes 


ASMEB1 6.26-88 




IAPMO IS 3-93 


Wrought copper and copper alloy solder-joint 
pressure fittings 


ASME B1 6.22-95 




IAPMO IS 3-93 


Copper alloy flanges and flanged fittings 
150-300 class 


ASME B1 6.24-91 






Steel pipe (galvanized) 


B1 25.1 -84 
B1 25.2-72 


A 53-93a 


IAPMO IS 13-91 


Malleable iron threaded fittings 


ASME B1 6.3-92 


A197-87(R-92) 


IAPMO IS 13-91 


Stainless steel 


A312-93 
A40.3-93 






Plastic, ABS 








Acrylonitrile-Butadiene-Styrene (ABS) plastic 
pipe Sch. 40 and 80 


NSF 14-90 


D 1527-89 




Socket-type (ABS) plastic pipe fittings (Sch. 40) 


NSF 14-90 


D 2468-93 




Socket-type Acrylonitrile-Butadiene-Styrene 
(ABS) plastic pipe fittings, Sch. 80 


NSF 14-90 


D 2469-76[D] 




Threaded Acrylonitrile-Butadiene-Styrene 
(ABS) plastic pipe fittings, Sch. 80 


NSF 14-90 


D 2465-73[D] 




Acrylonitrile-Butadiene-Styrene (ABS) plastic 
pipe (SDR-PR) 


NSF 14-90 


D 2282-89 




Plastic, CPVC 








Chlorinated poly (vinyl chloride) (CPVC) 
plastic pipe, Sch. 40 and 80 


NSF 14-90 


F 441 -94 


IAPMO IS 20-96 


Socket-type chlorinated poly (vinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 40 


NSF 14-90 


F 438-93 


IAPMO IS 20-96 


Chlorinated poly (vinyl chloride) (CPVC) 
plastic pipe (SDR-PR) 


NSF 14-90 


F 442-93 


IAPMO IS 20-96 


Threaded chlorinated poly (vinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 80 


NSF 14-90 


F 437-93 


IAPMO IS 20-96 


Socket-type chlorinated poly (vinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 80 


NSF 14-90 


F 439-93a 


IAPMO IS 20-96 


Belt-end chlorinated poly (vinyl chloride) 
(CPVC) pipe, Sch. 40 


NSF 14-90 


F443-77 e1 [D] 


IAPMO IS 20-96 


Chlorinated poly (vinyl chloride) (CPVC) 
plastic pipe, tubing and fittings 


NSF 14-90 


D 2846-93 


IAPMO IS 20-96 


Plastic, PB 








Polybutylene (PB) plastic pipe based on 
outside diameter 


NSF 14-90 


D 3000-93 




Polybutylene piping 


AWWA C902-88 
NSF 14-90 






Plastic, PE 








Polyethylene (PE) plastic pipe, (SDR-PR) 


NSF 14-90 


D 2239-93 


IAPMO IS 7-90 


Polyethylene (PE) plastic pipe, Sch. 40 


NSF 14-90 


D 2104-93 


IAPMO IS 7-90 


Polyethylene (PE) plastic tubing 


NSF 14-90 


D 2737-93 


IAPMO IS 7-90 



156 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Polyethylene (PE) plastic pipe, Sch. 40 and 
80 based on controlled outside diameter 


NSF 14-90 


D 2447-93 


IAPMO IS 7-90 


Polyethylene (PE) piping 


AWWAC901-88 
NSF 14-90 




IAPMO IS 7-90 


Plastic, PVC 








Poly (vinyl chloride) (PVC) plastic pipe Sch. 
40, 80 and 120 


NSF 14-90 


D 1785-93 


IAPMO IS 8-95 


Socket-type polyvinyl chloride) (PVC) plastic 
pipe fittings, Sch. 40 


NSF 14-90 


D 2466-94 (Note 1) 


IAPMO IS 8-95 


Socket-type poly (vinyl chloride) (PVC) plastic 
pipe fittings, Sch. 80 


NSF 14-90 


D 2467-94 (Note 1) 


IAPMO IS 8-95 


Threaded poly (vinyl chloride) (PVC) plastic 
pipe fittings, Sch. 80 


NSF 14-90 


D 2464-94 (Note 1) 


IAPMO IS 8-95 


Socket-type poly (vinyl chloride) (PVC) plastic 
line couplings 


NSF 14-90 


D 3036-73[D] 


IAPMO IS 8-95 


Poly vinyl chloride (PVC) plastic pipe (SDR-PR) 


NSF 14-90 


D 2241-93 


IAPMO IS 8-95 


Joints for IPS PVC pipe using solvent cement 


NSF 14-90 


D 2672-94 


IAPMO IS 8-95 


Poly (vinyl chloride) (PVC) plastic tubing 


NSF 14-90 


D 2740-89 e1 [D] 


IAPMO IS 8-95 


Poly (vinyl chloride) (PVC) pressure pipe 
4 in. to 12 in. (100 mm to 300 mm) for water 


NSF 14-90 
AWWA C900-89 




IAPMO IS 8-95 


Water Distribution Piping - Above Ground 








Welded Copper water tube 




B 716-93 


IAPMO IS 21-89 


Copper alloy sand casting for general applications 




B 584-93b (Note 5) 




Seamless copper pipe 




B 42-93 


IAPMO IS 3-93 


Seamless red brass pipe 




B 43-94 




Seamless copper water tube 




B 88-93a 


IAPMO IS 3-93 


Seamless and welded copper distribution tube 
(TypeD) 




B 641-93 


IAPMO IS 3-93 


Threadless copper pipe 




B 302-92 


IAPMO IS 3-93 


Cast copper alloy threaded fittings, 
125 and 150 class 


ASMEB1 6.1 5-85 






Cast copper alloy threadless fittings 






MIL-F-1183 
H(1)-83[D] 


Cast copper alloy solder-joint pressure fittings 


ASME B1 6. 18-84 (Note 1) 




IAPMO IS 3-93 


Cast copper alloy fittings for flared copper tubes 


ASMEB1 6.26-88 






Wrought copper and bronze solder-joint 
pressure fittings 


ASME B1 6.22-95 




IAPMO IS 3-93 


Copper alloy flanges and flanged fittings 
1 50-300 class 


ASME B1 6.24-91 






Steel pipe (galvanized) 


ASME 
B36.10M-85 


A 53-90a 
A120-84[D] 




Malleable iron threaded fittings (galvanized) 


ASME B1 6.3-92 


A197-87(R-92) 




Grooved-type mechanical couplings and 
fittings for steel pipe 




A 47-90 
A 536-84(R93) 




Ductile iron pipe centrifugal ly cast in metal or 
sand-lined molds 


AWWA C1 51/ 
A21 .51-91 


A 377-89 





157 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Ductile iron or gray iron fittings 



Ductile iron compact fittings 



Plastic, CPVC 

Chlorinated poly (vinyl chloride) (CPVC) 
plastic pipe, (SOR-PR) (cold water only) 

Socket-type chlorinated poly (vinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 40 

Threaded chlorinated poly (vinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 80 

Socket-type chlorinated poly (vinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 80 

Bell-end chlorinated poly (vinyl chloride) 
(CPVC) pipe, Sch. 40 (cold water only) 

Chlorinated poly (vinyl chloride) (CPVC) 
plastic pipe, tubing and fittings 

Water Distribution Piping - Below Ground 

Welded Copper water tube 

Asbestos-cement pressure pipe 

Copper alloy sand casting for general application! 

Seamless copper water tube (types K, L and 
M only) 

Threadless copper pipe 

Seamless copper tube 

Seamless copper alloy tube 

Seamless and welded copper distribution tube 
(TypeD) 

Cast copper alloy threaded fittings, 125 and 
250 class 

Cast copper alloy threadless fittings 



Cast copper alloy solder-joint pressure fittings 

Cast copper alloy fittings for flared copper tubes 

Wrought copper and copper alloy solder-joint 
pressure fittings 

Copper alloy flanges and flanged fittings - 
150-300 class 

Steel pipe (galvanized) 

Malleable iron threaded fittings (galvanized) 

Ductile iron pipe centrifugally cast in metal or 
sand-lined molds 

Ductile iron or gray iron fittings 
Ductile iron compact fittings 



AWWAC110/ 
A21. 10-93 

AWWAC153/ 
A2 1.53-88 



NSF 14-90 
NSF 14-90 
NSF 14-90 
NSF 14-90 
NSF 14-90 
NSF 14-90 



A 377-89 



F 442-93 


IAPMO IS 20-96 


F 438-93 


IAPMO IS 20-96 


F 437-93 


IAPMO IS 20-96 


F 439-93a 


IAPMO IS 20-96 


F443-77 e1 [D] 


IAPMO IS 20-96 


D 2846-93 


IAPMO IS 20-96 


B 71 6-93 


IAPMO IS 21-89 


C 296-93 




B 584-93b (Note 5) 




B 88-93a 


IAPMO IS 3-93 


B 302-92 


IAPMO IS 3-93 


B 75-93 


IAPMO IS 3-93 


B 135-91 


IAPMO IS 3-93 


B 641-93 


IAPMO IS 3-93 



ASMEB1 6.1 5-85 



ASME B1 6.1 8-84 (Note 1) 
ASMEB1 6.26-88 

ASME B1 6.22-95 

ASME B1 6.24-91 
ASMEB36.10M-85 

ASME B1 6.3-92 

AWWAC151/ 
A21.51-91 

AWWAC110/ 
A21. 10-93 

AWWAC153/ 
A21 .53-88 



A 53-93a 
A120-84[D] 

A197-87(R-92) 

A 377-89 

A 377-89 



MIL-F-1183 
H(I)-83[D] 

IAPMO IS 3-93 

IAPMO IS 3-93 

IAPMO IS 3-93 



IAPMO IS 13-91 
IAPMO IS 13-91 



158 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 


ANSI 


ASTM 


Other 


Plastic, CPVC 








Chlorinated poly (vinyl chloride) (CPVC) 
plastic pipe, Sch. 40 and 80 (cold water only) 


NSF 14-90 


F 441 -94 


IAPMO IS 20-96 


Socket-type chlorinated polyvinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 40 


NSF 14-90 


F 438-93 


IAPMO IS 20-96 


Chlorinated poly (vinyl chloride) (CPVC) 
plastic pipe (SDR-PR) (cold water only) 


NSF 14-90 


F 442-93 


IAPMO IS 20-96 


Threaded chlorinated poly (vinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 80 (cold 
water only) 


NSF 14-90 


F 437-93 


IAPMO IS 20-96 


Socket-type chlorinated poly (vinyl chloride) 
(CPVC) plastic pipe fittings, Sch. 80 


NSF 14-90 


F 439-93a 


IAPMO IS 20-96 


Bell-end chlorinated poly (vinyl chloride) 
(CPVC) pipe, Sch. 40 (cold water only) 


NSF 14-90 


F443-77 e1 [D] 


IAPMO IS 20-96 


Chlorinated poly (vinyl chloride) (CPVC) plastic 
pipe, tubing and fittings hot and cold water 


NSF 14-90 


D 2846-93 


IAPMO IS 20-96 


Plastic PEX 








Crosslinked polyethylene (PEX) tubing 




F 876-93 




Crosslinked polyethylene (PEX) plastic hot- 
and cold-water distribution systems 




F 877-93 




Valves and Appurtenances 








Angle, globe and check 






MSS-SP-71-90 
MSS-SP-80-87 


Gate (bronze) steel flanged and butt welded 


ASMEB1 6.34-88 






Corrosion-resistant cast flanged valves 






MSS-SP-42-90 


Gate (cast iron bodies brass mounted) 


AWWA C500-93 




MSS-SP-70-90 


Ball 






MSS-SP-72-92 


Butterfly 


AWWA C504-88 




MSS-SP-67-90 


Cocks, balancing, stop and check MSS 
standard marking system for valves, fittings, 
flanges and unions 






MSS-SP-25-93 


Cast iron plug valves 






MSS-SP-78-87 


Pressure reducing and regulating 


ASSE 1003-95 






Relief valves, pressure, temperature, 
temperature/pressure 


Z21.22-a-90 






Thermostatic mixing valve 


ASSE 1017-86 






Valves with atmospheric vacuum breakers 






IAPMO PS 72-93 


Pre-Pressurized potable water tanks 






IAPMO PS 88-95 


Unions 








Carbon steel pipe unions 






MSS-SP-83-87 


Malleable iron 


ASMEB1 6.39-86 






Copper alloy (bronze) 






WW-U-516A-74(b) 
WW-P-521F-77 


Flanges 








Cast iron 


ASMEB16.1-89 







159 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 



ANSI 



ASTM 



Other 



Steel 

Copper alloy flanges and flanged fittings150 lb. 
and 300 lb. 

Flared or compression connection non-ferrous 
pipe flanges 

Copper alloy (bronze) 

Flanged gaskets 

Backflow Preventers 

Pipe applied atmospheric vacuum breakers 
Hose-connected vacuum breakers 
Hose connection backflow preventers 
Back siphonage vacuum breakers 
Reduced pressure principle backflow preventer 
Double check valve assembly 
Pressure type vacuum breaker 
Water hammer arresters 

Air gaps 

Airgap units for water conditioning equipment 
installation 

Trap primer valve (water distribution type) 

Freezeless automatic draining and backflow 
wall hydrant 

Dual check valve type backflow preventers for 
carbonated beverage dispensers-post mix types 

Laboratory faucet vacuum breakers 



JOINING MATERIAL AND METHODS - 
WATER SUPPLY SYSTEMS 

Reinforced flexible water connectors 

Tools for mechanically formed tee connections in 
copper tubing 

Asbestos-cement pressure pipe 

Rubber rings for asbestos-cement pipe 

Rubber gasket joint for ductile iron and gray cast 
iron pressure pipe fittings 

Copper and nickel alloys (rods) 

Brazing filler metals 

Grooved-type mechanical couplings and fittings 

Grooved mechanical pipe couplings and grooved 
end fittings 



ASMEB1 6.5-88 
ASMEB1 6.47-90 

ASMEB1 6.24-91 

ASMEB1 6.26-88 
ASMEB1 6.24-91 
ASMEB16.21-92 



ASSE 1001-90 

ASSE 1011-95 

ASSE 1052-93 

ASSE 1056-95 

AWWAC511-92 

AWWAC510-92 

ASSE 1020-90 

ASMEA11 2.26.1 M-84 

ASMEA1 12.1.2-91 



ASSE 1018-86 

A1 1 2.21 .3M-85 (Note 1) 
ASSE 1019-95 



ASSE 1035-95 



AWWAC111/ 
A21. 11-90 



AWS A5.8-92 



C 296-93 
D 1869-94 



A 47-90 
A 536-84(R-93) 



MSS-SP-44-91 



IAPMO PS 31-95 



ASSE 1013-93 
ASSE 1015-93 



ASSE 1010-82 
PDIWH-201-92 

IAPMO PS-23-89 



IAPMO PS 65-93 



ASSE 1032-80 



IAPMO PS 74-95 
IAPMO PS 85-95 



QQ-R-571C-69[D] 



IAPMO PS 53-92 



160 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



Item 



Dielectric waterway fittings 

Solder metal 

Lead-free sealing compounds for threaded joints 

Making capillary joints by soldering of copper 
and copper alloy tube and fittings 

Liquid and paste fluxes for soldering applications of 
copper and copper alloy tube 

Silver brazing joints for wrought and cast solder 
joint fittings 

Caulking, lead wool and lead pig 

Plastic, ABS 

Solvent cement for Acrylonitrile Butadiene- 
Styrene (ABS) plastic pipe and fittings 

Joints for plastic pressure pipes using flexible 
elastomeric seals 

Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 

Plastic, CPVC 

Solvent cements for chlorinated poly (vinyl 
chloride) (CPVC) plastic pipe and fittings 

Joints for plastic pressure pipes using flexible 
elastomeric seals 

Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 

Chlorinated poly (vinyl chloride) (CPVC) 
plastic pipe, tubing and fittings 

Plastic, PB 

Metal insert fittings for polybutylene (PB) tubing 
Plastic, PE 

Polyethylene (PE) piping 

Heat-joining poly-olefin pipe and fittings 

Flaring polyolefin pipe and tubing 

Plastic insert fittings for polyethylene (PE) 
plastic pipe 

Plastic, PVC 

Solvent cement for poly (vinyl chloride) (PVC) 
plastic pipe and fittings 

Primers for use in solvent cement joints of poly 
(vinyl chloride) (PVC) plastic pipe and fittings 

Safe handling of solvent cements and primers 
used for joining thermoplastic pipe and fittings 

Joints for plastic pressure pipes using flexible 
elastomeric seals 

Making solvent-cemented joints with poly 
(vinyl chloride) (PVC) pipe and fittings 



ANSI 



NSF 14-90 



NSF 14-90 



AWWAC901-88 
NSF 14-90 



NSF 14-90 
NSF 14-90 



ASTM 



B 32-95a (Note 4) 

B 828-92^1 
B 81 3-93 

B 29-92 

D 2235-93a 
D 3139-89 
F 402-93 

F 493-93a 
D 3139-89 
F 402-93 
D 2846-93 

F 1380-94 



D 2657-90 
D 3140-90 

D 2609-93 (Note 1) 



D 2564-93 
F 656-93 
F 402-93 
D 3139-89 
D 2855-93 



Other 



IAPMO PS 66-93 
IAPMO PS 36-90 



MSS-SP-73-91 



IAPMO IS 20-96 
NSF No. 14 

IAPMO IS 20-96 
NSF No. 14 



IAPMO IS 20-96 
IAPMO IS 20-96 



IAPMO IS 7-90 

IAPMO IS 7-90 
IAPMO IS 7-90 

IAPMO IS 8-95 
IAPMO IS 8-95 
IAPMO IS 8-95 
IAPMO IS 8-95 
IAPMO IS 8-95 



161 



Table 14-1 



UNIFORM PLUMBING CODE 



Item 


ANSI 


ASTM 


Other 


Poly (vinyl chloride) (PVC) piping 


AWWA C900-89 
NSF 14-90 




lAPMO IS 8-95 


WRAPPING AND COATING 








Protectively coated pipe (Installation) 






IAPMO IS 13-91 


Black plastic poly (vinyl chloride) (PVC) or 
polyethylene (PE) pressure-sensitive corrosion 
preventive tape 






IAPMO PS 37-90 


Coal-tar protective coatings and linings for steel 
water pipelines - enameled and tape - hot applied 


AWWA C203-91 






Extruded polyolef in coatings for the exterior of 
steel water pipelines 


AWWA C21 5-88 







Footnotes 

1 Although this standard is referenced in Table 14-1, some of the pipe, tubing, fittings, valves, or fixtures included in the standard 
are not acceptable for use under the provisions of the Uniform Plumbing Code. 

2 PDI Standard G 101 by reference. 

3 Additional Requirements for inner and Outer Layers. 

4 See Section 316.1.3 for restriction. 

5 Alloy C85200 for cleanout plugs. 

6 Limited to domestic sewage. 

7 Type II only. 



162 



MANDATORY REFERENCED STANDARDS 



Table 14-1 



ABBREVIATIONS IN TABLE 14-1 

AHAM Association of Home Appliance Manufacturers, 1111 19th Street N.W., Suite 402, Washington DC 20036. 

ANSI American National Standards Institute, Inc., 25 W. 42nd Street, 4th floor, New York, NY 10036. 

ASME The American Society of Mechanical Engineering, Three Park Avenue, New York, NY 10016. 

ASSE American Society of Sanitary Engineering, 901 Canterbury, Suite A, Westlake, Ohio 44145. 

ASTM American Society of Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. 

AWS American Welding Society, 550 NW Lejuene Road, Miami, FL 33126. 

AWWA American Water Works Association, 6666 W. Quincy Avenue, Denver, CO 80235. 

CABO Council of American Building Officials, 5203 Leesburg Pike, Suite 708, Falls Church, VA 22041. 

CISPI Cast Iron Soil Pipe Institute, 5959 Shallowford Road, Suite 419, Chattanooga, TN 37421. 

(D) or [D] Discontinued. 

e * An editorial change since the last revision or reapproval. 

FS Federal Specifications, Federal Supply Service, Standards Division, General Services Administration, 7th 

and D Streets, Washington, DC 20407. 

IAPMO International Association of Plumbing and Mechanical Officials, 5001 E. Philadelphia St., Ontario, CA 

91761-2816. 

MSS Manufacturers Standardization Society of the Valve and Fittings Industry, 127 Park Street, N.E., Vienna, 

VA 22180. 

NEMA National Electrical Manufacturers Association, 2101 L Street, N.W., Suite 300, Washington, DC 20037. 

NFPA National Fire Protection Association, P.O. Box 9101, 1 Batterymarch Park, Quincy, MA 02269-9101. 

NSF NSF International, 789 Dixboro Road, Ann Arbor, MI 481 13-0140. 

PDI Plumbing and Drainage Institute, 45 Bristol Drive, Suite 101, South Easton, MA 02375. 

SSPMA Sump and Sewage Pump Manufacturers Association, P.O. Box 298, Winnetka, IL 60093-0298. 

UL Underwriters' Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062. 



163 



Table 14-2 UNIFORM PLUMBING CODE 

TABLE 14-2 
Fixture and Fitting Standards 

Air gaps, dishwasher drain ANSI/AHAM DW-1 , ASSE 1021 

Bathtubs, enameled cast-iron ANSI/ASME A112.19.1M 

Bathtubs, enameled steel ANSI/ASME A112.19.4M 

Bathtubs, plastic ANSIZ124.1 

Bathtub fixture fittings ANSI/ASME A112.18.1M 

Bidets, vitreous china ANSI/ASME A1 12.19.2 

Ballcocks, water closet flush tank ANSI/ASSE 1002 

Clothes washers, domestic, automatic ANSI/AHAM HLW-2PR or ANSI/ASSE 1007 

Dishwashers, commercial ANSI/UL921 and ANSI/ASSE 1004, NSF3-82 

Dishwashers, domestic ANSI/UL 749 and either ANSI/AHAM DW-2PR or ANSI/ASSE 1006 

Diverters, anti-siphon faucets ANSI/ASSE 1025 

Drinking fountains, refrigerated ANSI/ARI 1010 and ANSI/UL 399 

Floor drains ANSI A11 2.21.1 M 

Flushometer valves ANSI/ASSE 1037 

Food-waste-grinder units ANSI/UL 430 and AHAM FWD-1, ASSE 1008, or ANSI/ASSE 1008 

Hot water dispensers, fixture-mounted ANSI/ASSE 1023 

Hydrants, utility ANSI/ASME A1 12.21 .3M 

Lavatories, vitreous china ANSI/ASME A1 12.19.2M 

Lavatories, enameled steel ANSI/ASME A1 12.19.4M 

Lavatories, enameled cast-iron ANSI/ASME A112.19.1M 

Lavatories, stainless steel ANSI/ASME A1 12.19.3M 

Lavatories, plastic ANSI Z124.3 

Lavatories, ceramic, non-vitreous ANSI/ASME A1 12.1 9.9M 

Lavatory fixture fittings ANSI/ASME A1 12.1 8.1 M 

Roof drains ANSI/A112.21.2M 

Shower heads and control valves ANSI/ASME A1 12.18.1M, ASSE 1016, ASSE 1017 

Shower devices, hand-held, water-connected ANSI/ASSE 1014 

Showers, plastic ANSIZ124.2 

Sinks, enameled cast-iron ANSI/ASME A112.19.1M 

Sinks, enameled steel ANSI/ASME A1 12.19.4M 

Sinks, stainless steel ANSI/ASME A1 12.19.3M 

Sink fixture fittings ANSI/ASME A112.18.1M 

Urinals, plastic ANSIZ124.9 

Urinals, vitreous china ANSI A112.9.2M 

Urinals, hydraulic requirements ANSI/ASME A1 12.19.6 

Wall hydrants, anti-freeze, with vacuum breaker ASSE 1019 

Water closets, vitreous china ANSI A1 12.19.2M 

Water closets, plastic ANSI Z124.4 

Water closets, hydraulic requirements ANSI/ASME A1 12.1 9.6 

Water closet seats ANSI Z124.5 

Water closet trim ASME A1 12.19.5 

Water coolers, refrigerated ANSI/ARI 1010 and ANSI/UL 399 

Water flow control devices ASSE 1028, ASSE 1034 

Water heaters, electric ANSI Z21.10.1 

Water heaters, gas, volume I ANSI Z21.10.1 

Water heaters, gas, volume III ANSI Z21.10.3 

Water heaters, oil ANSI Z21. 10.1, UL 174, UL732 

Whirlpool baths, plastic ANSI/ASME A1 12.19.7M 

Whirlpool baths, suction fitting ANSI/ASME A1 12.1 9.8M, IAPMO SPS4 

Whirlpool bath fixture fittings ANSI/ASME A112.18.1M 

164 



APPENDICES 

The appendices are intended to supplement the provisions of the installation requirements of this Code. The 
definitions in Chapter 2 are also applicable to the appendices. 

TABLE OF CONTENTS 

Page 
Appendix A 

Recommended Rules for Sizing the Water Supply System 167 

Appendix B 

Explanatory Notes on Combination Waste and Vent Systems 183 

Appendix C 

Additional Referenced Standards 185 

Appendix D 

Sizing Stormwater Drainage Systems 189 

Appendix E 

Manufactured/Mobile Home Parks and Recreational Vehicle Parks 197 

Appendix F 
Reserved 

Appendix G 

Graywater Systems for Single Family Dwellings 205 

Appendix H 

Recommended Procedures for Design, Construction and Installation of Commercial 

Kitchen Grease Interceptors 215 

Appendix I 

Installation Standards 219 

Appendix J 

Reclaimed Water Systems for Non-Residential Buildings 313 

Appendix K 

Private Sewage Disposal Systems 317 

Appendix L 

Alternate Plumbing Systems 329 



165 



UNIFORM PLUMBING CODE 



^> 



^ 



166 



APPENDIX A 

RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYSTEM 



Because of the variable conditions encountered, it is 
impractical to lay down definite detailed rules of 
procedure for determining the sizes of water supply 
pipes in an appendix which must necessarily be 
limited in length. For a more adequate 
understanding of the problems involved, refer to 
Water-Distributing Systems for Buildings, Report 
BMS 79 of the National Bureau of Standards; and 
Plumbing Manual, Report BMS 66, also published by 
the National Bureau of Standards. 



The following is a suggested order of 
procedure for sizing the water supply system. 
A 1 Preliminary Information 

A 1.1 Obtain the necessary information 
regarding the minimum daily service pressure in the 
area where the building is to be located. 

A 1 .2 If the building supply is to be metered, 
obtain information regarding friction loss relative to 
the rate of flow for meters in the range of sizes likely 
to be used. Friction-loss data can be obtained from 



20 
16 



- 10 
d 9 

CO 8 

» I 

-o 6 



<D 3 

3 

£ 2 

a. 



CHART A-1 

Friction Losses for Disk Type Water Meters 









/ , 


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5 6 7 8 910 20 30 40 50 60 80 100 

Flow - Gallons per Minute 



200 300 400 600 8001000 



I 

0) 
(0 

o 



137.8 
110.2 

68.9 
62.0 
55.1 
48.2 
41.3 
34.5 
27.6 

20.7 
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6.9 



CHART A-1 (Metric) 

Friction Losses for Disk Type Water Meters 







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167 



Appendix A 



UNIFORM PLUMBING CODE 



TABLE A-2 



in x 25.4 = mm 



Water Supply Fixture Units (WSFU) and Minimum Fixture Branch Pipe Sizes 

Minimum Private Public 

Fixture Outlet Individual 3 or more General Heavy-Use 
Individual Fixtures 2 Pipe Size 1 Dwelling Dwellings Use Assembly 

Bar Sink 1/2" 1.0 1.0 2.0 

Bathtub or Combination Bath/Shower 1/2" 4.0 3.5 

Bidet 1/2" 1.0 0.5 

Clinic Sink 1/2" 8.0 

Clotheswashwer, domestic 1/2" 4.0 2.5 4.0 

Dental Unit, cuspidor 1/2" 1.0 

Dishwasher, domestic 1/2" 1.5 1.0 1.5 

Drinking Fountain or Watercooler 1/2" 0.5 0.75 

Hose Bibb 1/2" 2.5 2.5 2.5 

Hose Bibb, each additional 1/2" 1.0 1.0 1.0 

Kitchen Sink, domestic 1/2" 1.5 1.0 1.5 

Laundry Sink 1/2" 2.0 1 .0 2.0 

Lavatory 1/2" 1.0 0.5 1.0 1.0 

Lawn Sprinkler, each head 1 .0 1 .0 1 .0 

Mobile Home, each 12.0 12.0 

Service Sink or Mop Basin 1/2" 3.0 

Shower 1/2" 2.0 2.0 2.0 

Shower, continous use 1/2" 5.0 

Urinal, 1.0 GPF 4.0 5.0 

Urinal, greater than 1 .0 GPF 5.0 6.0 

Urinal, flush tank 1/2" 3.0 4.0 

Washfountain, circular spray 3/4" 4.0 

Washup Sink, each set of faucets 1/2" 2.0 

Water Closet, 1.6 GPF Gravity Tank 1/2" 2.5 2.5 2.5 4.0 

Water Closet, 1.6 GPF Flushometer Tank 1/2" 2.5 2.5 2.5 3.5 

Water Closet, 1.6 GPF Flushometer Valve 1" 5.0 5.0 5.0 8.0 

Water Closet, 3.5 GPF Gravity Tank 1/2" 3.0 3.0 5.5 7.0 

Water Closet, 3.5 GPF Flushometer Valve 1" 7.0 7.0 8.0 10.0 

Whirlpool Bath or Combination Bath/Shower 1/2" 4.0 4.0 

Notes: 

1 . Size of the cold branch outlet pipe, or both the hot and cold branch outlet pipes. 

2. For unlisted fixtures, refer to a listed fixture with a similar flow rate and frequency of use. 

3. The listed fixture unit values represent their total load on the cold water service. The separate cold water 
and hot water fixture unit value for fixtures having both cold and hot water connections shall each be taken 
as three-quarters (3/4) of the listed total value of the fixture. 

4. The listed minimum supply branch pipe sizes for individual fixtures are the nominal (l.D.) pipe size. 

5. "General use" applies to business, commercial, industrial, and assembly occupancies other than those 
defined under "Heavy-use." Included are the public and common areas in hotels, motels, and multi-dwelling 
buildings 

6. "Heavy-use assembly" applies to toilet facilities in occupancies which place a heavy, but intermittent, time- 
based demand on the water supply system, such as schools, auditoriums, stadiums, race courses, 
transportation terminals, theaters, and similar occupancies where queuing is likely to occur during periods 
of peak use. 

7. For fixtures or supply connections likely to impose continuous flow demands, determine the required flow in 
gallons per minute (GPM) and add it separately to the demand (in GPM) for the distribution system or 
portions thereof. 



168 



SIZING WATER SYSTEMS 



Appendix A 



most manufacturers of water meters. Friction losses 
for disk type meters may be obtained from Chart A-l. 

A 1.3 Obtain all available local information 
regarding the use of different kinds of pipe with 
respect both to durability and to decrease in capacity 
with length of service in the particular water supply. 

A 2 Demand Load 

A 2.1 Estimate the supply demand for the 
building main and the principal branches and risers 
of the system by totaling the fixture units on each, 
Table A-2, and then by reading the corresponding 
ordinate from Chart A-2 or A-3, whichever is 
applicable. 

A 2.2 Estimate continuous supply demands in 
gallons per minute (liters per second) for lawn 
sprinklers, air conditioners, etc., and add the sum to 
the total demand for fixtures. The result is the 
estimated supply demand of the building supply. 

A 3 Permissible Friction Loss 

A 3.1 Decide what is the desirable minimum 
residual pressure that shall be maintained at the 
highest fixture in the supply system. If the highest 
group of fixtures contains flushometer valves, the 
residual pressure for the group shall not be less than 
fifteen (15) psi (103 kPa). For flush tank supplies, the 
available residual pressure shall not be less than 
eight (8) psi (55 kPa). 



A 3.2 Determine the elevation of the highest 
fixture or group of fixtures above the water (street) 
main. Multiply this difference in elevation by forty- 
three hundredths (0.43). The result is the loss in static 
pressure in psi (pounds per square inch) (kPa). 

A 3.3 Subtract the sum of loss in static 
pressure and the residual pressure to be maintained 
at the highest fixture from the average minimum 
daily service pressure. The result will be the pressure 
available for friction loss in the supply pipes, if no 
water meter is used. If a meter is to be installed, the 
friction loss in the meter for the estimated maximum 
demand should also be subtracted from the service 
pressure to determine the pressure loss available for 
friction loss in the supply pipes. 

A 3.4 Determine the developed length of pipe 
from the water (street) main to the highest fixture. If 
close estimates are desired, compute with the aid of 
Table A-3 the equivalent length of pipe for all fittings 
in the line from the water (street) main to the highest 
fixture and add the sum to the developed length. The 
pressure available for friction loss in pounds per 
square inch (kPa), divided by the developed lengths 
of pipe from the water (street) main to the highest 
fixture, times one hundred (100), will be the average 
permissible friction loss per one hundred (100) foot 
(30480 mm) length of pipe. 

A 4 Size of Building Supply 

A 4.1 Knowing the permissible friction loss 
per one hundred (100) feet (30480 mm) of pipe and 



TABLE A-3 

Allowance in equivalent length of pipe for friction loss 

in valves and threaded fittings.* 

Equivalent Length of Pipe for Various Fittings 



Diameter 
of fitting 
Inches 


90° 

Standard 

Elbow 

Feet 


45° 

Standard 

Elbow 

Feet 


Standard 

Tee 90° 

Feet 


Coupling or 

Straight 

Run of Tee 

Feet 


Gate 
Valve 
Feet 


Globe 
Valve 
Feet 


Angle 
Valve 
Feet 


3/8 


1.0 


0.6 


1.5 


0.3 


0.2 


8 


4 


1/2 


2.0 


1.2 


3.0 


0.6 


0.4 


15 


8 


3/4 


2.5 


1.5 


4.0 


0.8 


0.5 


20 


12 


1 


3.0 


1.8 


5.0 


0.9 


0.6 


25 


15 


1-1/4 


4.0 


2.4 


6.0 


1.2 


0.8 


35 


18 


1-1/2 


5.0 


3.0 


7.0 


1.5 


1.0 


45 


22 


2 


7.0 


4.0 


10.0 


2.0 


1.3 


55 


28 


2-1/2 


8.0 


5.0 


12.0 


2.5 


1.6 


65 


34 


3 


10.0 


6.0 


15.0 


3.0 


2.0 


80 


40 


4 


14.0 


8.0 


21.0 


4.0 


2.7 


125 


55 


5 


17.0 


10.0 


25.0 


5.0 


3.3 


140 


70 


6 


20.0 


12.0 


30.0 


6.0 


4.0 


165 


80 



169 



Appendix A 



UNIFORM PLUMBING CODE 



TABLE A-3 (Metric) 
Equivalent Length of Pipe for Various Fittings 



Diameter 
of fitting 


90° 

Standard 

Elbow 


45° 

Standard 

Elbow 


Standard 
Tee 90° 


Coupling or 

Straight 
Run of Tee 


Gate 
Valve 


Globe 
Valve 


Angle 
Valve 


mm 


mm 


mm 


mm 


mm 


mm 


mm 


mm 


9.5 


305 


183 


457 


91 


61 


2438 


1219 


12.7 


610 


366 


914 


183 


122 


4572 


2438 


19.1 


762 


457 


1219 


244 


152 


6096 


3658 


25.4 


914 


549 


1524 


274 


183 


7620 


4572 


32 


1219 


732 


1829 


366 


244 


10668 


5486 


38 


1524 


914 


2134 


457 


305 


13716 


6706 


51 


2134 


1219 


3048 


610 


396 


16764 


8534 


64 


2438 


1524 


3658 


762 


488 


19812 


10363 


76 


3048 


1829 


4572 


914 


610 


24384 


12192 


102 


4267 


2438 


6401 


1219 


823 


38100 


16764 


127 


5182 


3048 


7620 


1524 


1006 


42672 


21336 


152 


6096 


3658 


9144 


1829 


1219 


50292 


24384 



'Allowances are based on non-recessed threaded fittings. Use one-half (1/2) the allowances for recessed threaded 
fittings or streamline solder fittings. 



the total demand, the diameter of the building 
supply pipe may be obtained from Charts A-4, A-5, 
A-6, or A-7, whichever is applicable. The diameter of 
pipe on or next above the coordinate point 
corresponding to the estimated total demand and the 
permissible friction loss will be the size needed up to 
the first branch from the building supply pipe. 

A 4.2 If copper tubing or brass pipe is to be 
used for the supply piping, and if the character of the 
water is such that only slight changes in the 
hydraulic characteristics may be expected, Chart A-4 
may be used. 

A 4.3 Chart A-5 should be used for ferrous 
pipe with only the most favorable water supply as 
regards corrosion and caking. If the water is hard or 
corrosive, Charts A-6 or A-7 will be applicable. For 
extremely hard water, it will be advisable to make 
additional allowances for the reduction of capacity of 
hot water lines in service. 



A 5 Size of Principal Branches and Risers 

A 5.1 The required size of branches and risers 
may be obtained in the same manner as the building 
supply by obtaining the demand load on each 
branch or riser and using the permissible friction loss 
computed in SectionA 3. 

A 5.2 Fixture branches to the building supply, 



if they are sized for the same permissible friction loss 
per one hundred (100) feet (30480 mm) of pipe as the 
branches and risers to the highest level in the 
building, may lead to inadequate water supply to the 
upper floor of a building. This may be controlled by: 
(1) selecting the sizes of pipe for the different 
branches so that the total friction loss in each lower 
branch is approximately equal to the total loss in the 
riser, including both friction loss and loss in static 
pressure; (2) throttling each such branch by means of 
a valve until the preceding balance is obtained; (3) 
increasing the size of the building supply and risers 
above the minimum required to meet the maximum 
permissible friction loss. 

A 5.3 The size of branches and mains serving 
flushometer tanks shall be consistent with sizing 
procedures for flush tank water closets. 

A 6 General 

A 6.1 Velocities shall not exceed 10 
feet /second (3.0 m/sec.) or the maximum values 
given in the appropriate Installation Standard, 
except as otherwise approved by the Administrative 
Authority. 

A 6.2 If a pressure reducing valve is used in 
the building supply, the developed length of supply 
piping and the permissible friction loss should be 
computed from the building side of the valve. 



170 



SIZING WATER SYSTEMS 



Appendix A 



Example 



Fixture Units and Estimated Demands 



Kind of 
Fixtures 


Build 

No. of 
Fixtures 


ing Supply Demand 

Building Supply 
Demand 
Fixture Unit Total in gpm 
Demand Units (L per sec) 


Branch to Hot Water System 

Demand 
Fixture Unit in gallons 
No. of Demand per minute 
Fixtures Calculation (L per sec) 


Water Closets 


130 


8.0 


1040 


- 


- 


- 




- 


Urinals 


30 


4.0 


120 


- 


- 


- 




- 


Shower Heads 


12 


2.0 


24 


- 


12 


12x2x3/4: 


= 18 


- 


Lavatories 


100 


1.0 


100 


- 


100 


100 x 1 x 3/4 = 


= 75 


- 


Service Sinks 


27 


3.0 


81 


- 


27 


27x3x3/4: 


= 61 


- 


Total 






1365 


252 gpm (15.8 Us) 






154 


55 gpm (3.4 Us) 



Allowing for 15 psi (103.4 kPa) at the highest fixture under the maximum demand of 252 gallons per minute (15.8 
Usee), the pressure available for friction loss is found by the following: 

55 - [1 5 + (45 x 0.43)] = 20.65 psi 

Metric: 379 - [103.4 + (13.7 x 9.8)] = 142.3 kPa 

The allowable friction loss per 100 feet (30.4 m) of pipe is therefore: 

100 x 20.65 -r 200 = 10.32 psi 

Metric: 30.4 x 142.3 -r 60.8 = 71.1 kPa 



A 6.3 The allowances in Table A-3 for fittings 
are based on non-recessed threaded fittings. For 
recessed threaded fittings and streamlined soldered 
fittings, one-half (1/2) the allowances given in the 
table will be ample. 



total demand estimate from the branch, riser or 
section thereof, to the appropriate flow 



A 7 Example 

A 7.1 Assume an office building of four (4) 
stories and basement; pressure on the building side 
of the pressure reducing valve of fifty-five (55) psi 
(379 kPa) (after an allowance for reduced pressure 
''fall off" at peak demand); an elevation of highest 
fixture above the pressure reducing valve of forty- 
five (45) feet (13716 mm); a developed length of pipe 
from the pressure reducing valve to the most distant 
fixture of two hundred (200) feet (60960 mm); and 
fixtures to be installed with flush valves for water 
closets and stall urinals as follows: 

If the pipe material and water supply are such that 
Chart A-5 applies, the required diameter of the 
building supply is three (3) inches (76 mm), and the 
required diameter of the branch to the hot water 
heater is one and one half (1-1/2) inch (38 mm). 

The sizes of the various branches and risers may be 
determined in the same manner as the size of the 
building supply or the branch to the hot water 
system by estimating the demand for the riser or 
branch from Charts A-2 or A-3, and applying the 



171 



Appendix A 



UNIFORM PLUMBING CODE 



Q_ 

6 

i 

T3 

C 
CO 

E 

CD 

Q 



500 



400 



300 



200 



100 



CHART A-2 

Estimate Curves for Demand Load 




1000 1500 

Fixture Units 



2000 



2500 



3000 



31.5 



25.4 



c 
o 
o 

<D 
CO 
"35 



3 18.9 



i 

T3 

C 
03 

E 
<x> 
Q 



12.6 



CHART A-2 (Metric) 

Estimate Curves for Demand Load 




1000 1500 2000 

Fixture Units 



3000 



172 



SIZING WATER SYSTEMS 



Appendix A 



CHART A-3 

Enlarged Scale Demand Load 



2 

d 

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T3 
C 
Ctf 

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Q 



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Fixture Units 



CHART A-3 (Metric) 

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20 40 60 80 100 120 140 160 180 200 220 240 

Fixture Units 



173 



Appendix A 



UNIFORM PLUMBING CODE 



CHART A-4 



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8000 

6000 
5000 
4000 

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2000 



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800 

600 
500 
400 

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200 2 










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10 



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0.1 0.2 0.3 0.4 0.6 0.8 1 



2 3 4 5 6 8 10 20 30 40 5060 80100 



Friction Loss - Lbs. per Square Inch Head per 100 Foot Length 



174 



SIZING WATER SYSTEMS 



Appendix A 



CHART A-4 (Metric) 



Copper Tubing 




— 










^ 


Smooth Pipe 


















^ 


Type M - 


- — 


— ~ 


















Type L - 
















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5^^\ 






"A 


*£- \ 








-> . y j 






S. ,.*" 


V A 






















3*^ 


\ ^>V 






*c * 










> \^\ 




,s 


^ 








r*'^* 










d **s\ \ 






V 










' *\ ^ 














V 


' 7 *\^ 


N 


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2^ :: 






\ 6 










x^ 


y/T ^ 


>>; 






o 


















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^ 




v 'vP/^ 












\ S 


V <** a 


— ^f-'j^Z* \ — 


X- ^ 




*?*& 


^*\ 








\^ > 






\^ 


^%^ — V -1 — 


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*55~~\- 






S^ 




'V -<> 






^ y \ 


- i V \ 


''V 


r * s ^ < 




^ 






^ -" y^' 






' v*o 


1 \ \ 


l ^S^C^y 


? ? 






\ ' 


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"*A " 


\ 1 \ 


)f'* 




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\jr 


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sj* 






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s 
''/' 




if\ \ 




\ 


\ \ 



630.0 
504.0 

378.0 
315.0 
252.0 

189.0 
126.0 



63.0 
50.4 

37.8 
31.5 
25.2 

18.9 
12.6 



6.3 

5.0 

3.8 
3.2 
2.5 

1.9 
1.3 



0.6 
0.5 

0.4 
0.4 
0.3 
0.3 

0.2 



0.1 



c 
o 
o 

Q) 
CO 

g5 

Q. 



5 
o 



CsJ tJ- N 


CO 


o> 


00 


1**- 


CO 


in "^r 


CM 


o 


O) 


CO 


O N N 


CO 


m 


CO CO o> 


to 

CM 


CO 


IT) 

co 


co 


CO 


CO O) 


s 

CO 


C\J 
CO 


in 
co 


CO 
00 

o> 


1315 
1644 
1973 


s 

C\J 


cx> 

00 

cvj 

CO 



Friction Loss - 32.9 Pa/m 



175 



Appendix A 



UNIFORM PLUMBING CODE 



CHART A-5 




o 

C 



Q. 
(0 

c 
To 

o 



0.1 0.2 0.3 0.4 0.6 

Friction Loss - 



0.8 1 2 3 4 5 6 8 10 20 30 40 50 60 80100 

- Lbs. per Square Inch Head per 100 Foot Length 



176 



SIZING WATER SYSTEMS 



Appendix A 



CHART A-5 (Metric) 











t^ Zt. 






^H — f" 


Fairiy omuuin 


\ ftk^jf^' 








1 s* 


L^r\ 








-^ — 














\ 






\ 




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>"^\ 


X y\ 


r..v .. 


~**\ — 




\\ 




■^> 


— ir*^* 




^ 


^ v U^'" 


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— 


b^\ 


^:~^ 




3^ 


^r^K 






s> 


t\ ~\ 


' ^^ \ 




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> 


J"*"^ up , *- * 




\<S \ ^ 






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\ X v 
















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'\\s 


V 














A% 


1 v!^ 








^_\ 


\ l 


i \y^\^ 

— "^\ V 


» — y 




s r - ^ 




^ — ,— ~ 








■'-" s b ; 


K^ 




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s\i ^*C 


V 








C 5.'*' 






\o 


V' v^ 


"\ 








A^ \- 


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V<y ^ 


Yx^x 


\ 






3 


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o 










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^ 




\^ X^ 






^t i 3c; 


— _^ 


1 V 


>*" \ 


2 


Mi 






V^ 


\ ^ 






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^ 


5; 5 s - 


^s^ 


\>S 










N ^ 




^ \ ' 


^ ^ 


Ka 




^K 






! V\ 


^ i \ ! 


^ 


X 














\ i \ 


,- 




\ - 


\ \ 




V ^ 


!V \ x 




V \ 


/ 


S 


M 




M 


R 


XV 


\ X 



630.0 
504.0 

378.0 
315.0 
252.0 

189.0 
126.0 



63.0 




50.4 




37.8 




31.5 




25.2 




18.9 




12.6 


T3 

c 
o 
o 

CO 


6.3 
5.0 
3.8 


Q. 


3.2 


,c 


2.5 
1.9 


i 

o 

LL 



1.3 

0.6 
0.5 
0.4 
0.4 
0.3 
0.3 

0.2 
0.1 



CM TT h- 


CO 


CO 


CO 


h» 


co iflt 


CM o 


cn 


GO 


CO 


CO CO o> 


ID 
CM 


CM 
CO 


CO 


00 


CO CD O) 


38 

CM CO 


in 

CO 


CO 
CO 

cn 


CO 
CO 



r^ r». cq io 

^ co T-' oS 

TC N CO CO 

co a> co cm 

•^ f- CM CO 



Friction Loss - 32.9 Pa/m 



177 



Appendix A 



UNIFORM PLUMBING CODE 



CHART A-6 




0.1 0.2 0.3 0.4 0.6 0.8 1 2 3 4 5 6 8 10 20 30 40 50 60 80100 

Friction Loss - Lbs. per Square Inch Head per 1 00 Foot Length 



178 



SIZING WATER SYSTEMS 



Appendix A 



CHART A-6 (Metric) 









\ \ 




#MJ 


*™ 


Fainy riougn 


^ \ 




^5r^ 


\ ^-^ 




^V 


m \ 






,-v ^ 


X 1 






i\ V 






^^ 




t^i 






\ <<&. 












U-Y 


^A 




S^rc 






^ 




sS^ 










f \ \ <&r \^ 


<-\^p 


^--i^ 


^ i \ 


Jr*\. i 




-A jA ^' \_ P 




^ \ 


JV" \ 


a? 




j^*' "V> ^^ ^ 






(i VA 






NJ^' N 


^\ 1 




\ 1 [>^A " 


V ^>*> [J 


jup ji 


cf>> 


\ L-^Tl 






i \ 


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V 3 


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v '4 






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■'V^r 


^ 


U ^'t 


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^ 


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y^ 




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x^ V 








N£x^ 






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S 


\ 


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W : 












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F 


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j \sS^ \ 






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L_LL 


1a . 




^'A 


uV 


^ 


\ \ 



630.0 
504.0 

378.0 
315.0 
252.0 

189.0 
126.0 



63.0 
50.4 

37.8 
31.5 
25.2 

18.9 
12.6 



6.3 
5.0 

3.8 
3.2 
2.5 

1.9 
1.3 



0.6 
0.5 

0.4 
0.4 
0.3 
0.3 

0.2 



0.1 



CM 


^r«- 


CO 


o> 


GO 


h» 


CO 


lO -*• 


CM 


O 


O) 


CO 


00 


h- 


h» 


co 


in 


co 


coo 


CO 


CM 


in 


CO 


*- 


s 


I*- 


s 


O) 


r- 


CO 


in 


^ 


CO 


y— 


o> 






CN 


CO 


to 


O) 


CO 


OJ 


CM 


in 


CO 






h- 


s* 


CO 




















CM 


CO 


CO 


o> 


CO 




o> 


CM 






























■*~ 


*~ 


CM 


CO 



Friction Loss - 32.9 Pa/m 



179 



Appendix A 



UNIFORM PLUMBING CODE 



CHART A-7 




0.1 0.2 0.3 0.4 0.6 0.8 1 2 3 4 5 6 8 10 20 30 40 5060 80100 

Friction Loss - Lbs. per Square Inch Head per 100 Foot Length 



180 



SIZING WATER SYSTEMS 



Appendix A 



CHART A-7 (Metric) 









i 


•trV-^-ni^ 


lli\ ^ J i IkHI 




\ ;. x \ i \ 


1 lA 


J^!\l > 


Rough 


V \ , \ ! 


v^ \ 




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^ X 






^\ ' 






V i 




iAt^ 


\\\ 












— K~ 


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<** 


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V^ \ 




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V-^ 




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\1 jxf 








^■""v L-'' 


^r... 








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\ ^"^ 




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V*> 


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\ ^V^ 




\ 


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— H=> 




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\i 




V"T* 


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^ 


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IX* ^ v° -< 








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p "^ \ 






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VJ 
















r — t— \ — V 


^X 


vV 


"T 


^ 








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V"'" \ \ 


s 




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^N 


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\ i . 








v | \ 



630.0 
504.0 

378.0 
315.0 
252.0 

189.0 
126.0 



63.0 
50.4 

37.8 
31.5 
25.2 

18.9 
12.6 



6.3 
5.0 
3.8 
3.2 
2.5 

1.9 
1.3 



0.6 
0.5 

0.4 
0.4 
0.3 
0.3 

0.2 



0.1 



o 


CO 


CT> 


CM 


fN 


co 


a> 


CO 


1*- 


CO 


co «<r 


C\J 


o 


o> 


00 


co 


h- 


r-. 


CO 


cr> 


co 


CO 


o> 


CO 


COO 


CO 


CJ 


ID 


CO 


y— 


tj- k 


CO 


a 


h- 


CO 


m 


^ , 


ro 


,_ 


o> 












CM 


CO 


CD 


0> 


CO 


co en 


CO 


CM 


m 


CO 




Tl- 


is. 


2 


00 
























CM 


co 


CO 


o> 


co 


CO 


C7> 


CM 






































CM 


CO 



Friction Loss - 32.9 Palm 



181 



UNIFORM PLUMBING CODE 



"> 



182 



APPENDIX B 

EXPLANATORY NOTES ON COMBINATION WASTE AND VENT SYSTEMS 

(See Section 910.0 for specific limitations.) 



B 1 Combination waste and vent systems, as 
outlined in Section 910.0 of this Code, cover the 
horizontal wet venting of a series of traps by means 
of a common waste and vent pipe. Line sizes at least 
two (2) pipe sizes larger than those required for a 
conventional system are designed to maintain a 
wetted perimeter or flow line low enough in the 
waste pipe to allow adequate air movement in the 
upper portion, thus balancing the system. Sinks, 
lavatories, and other fixtures that rough in above the 
floor, should not be permitted on a combination 
waste and vent system, which, at best, is merely an 
expedient designed to be used in locations where it 
would be structurally impractical to provide venting 
in the conventional manner. 

Combination waste and vent systems are 
intended primarily for extensive floor or shower 
drain installations where separate venting is not 
practical, for floor sinks in markets, demonstration or 
work tables in school buildings, or for similar 
applications where the fixtures are not adjacent to 
walls or partitions. Due to its oversize characteristics, 
such a waste system is not self scouring and 
consequently care should be exercised as to the type 
of fixtures connected thereto, and to the location of 
cleanouts. In view of its grease-producing potential, 
restaurant kitchen equipment should not be 
connected to a combination waste and vent system. 

B 2 Caution must be exercised to exclude 
appurtenances delivering large quantities or surges 
of water (such as pumps, sand interceptors, etc.) 
from combination waste and vent systems in order 
that adequate venting will be maintained. Small 
fixtures with a waste producing potential of less than 
seven and one-half (7-1/2) gallons per minute (0.5 
L/sec.) may be safely assigned a loading value of 
one (1) unit. Long runs should be laid at the 
minimum permissible slope in order to keep 
tailpieces as short as possible. Tailpieces should not 
exceed two (2) feet (610 mm) in length which may 
necessitate slopes up to forty-five (45) degrees (0.79 
rad) (see definition of horizontal pipe) on some 
branches. 

B 3 It is essential that the pneumatics of such a 
system be properly engineered as the air pressure 
within the line must at all times balance that of 
outside atmosphere in order to prevent either trap 
seal loss or air locking between traps. Long mains 
shall be provided with additional relief vents located 



at intervals not exceeding one hundred (100) feet 
(30480 mm). Each such relief vent should equal at 
least one-half (1/2) of the inside cross-sectional area 
of the drain pipe served. 

B 4 Trap sizes are required to be equivalent to the 
branches they serve (two (2) pipe sizes larger than 
normal) and tailpieces between fixtures or floor 
drains and such traps should be reduced to normal 
size. 

B 5 Duplicate layout drawings of each such 
proposed piping system must be presented to the 
Administrative Authority, and approval obtained 
before any installation is made. Complicated layouts 
should be checked by qualified personnel. 

B 5.1 Example of Sizing 

A floor drain normally required two (2) inch (51 mm) 
trap and waste. On a combination waste and vent 
system both trap and waste must be increased two 
(2) pipe sizes (through 2-1/2" and 3") (64 mm and 76 
mm) which would make the trap three (3) inch (76 
mm), (pipe sizes recognized for this purpose are 2", 
2-1/2", 3", 3-1/2", 4", 4-1/2", 5", 6", etc.) (51 mm, 64 
mm, 76 mm, 89 mm, 102 mm, 114 mm, 127 mm, 152 
mm, etc.). The tailpiece between the floor drain and 
its trap should be two (2) inches (51 mm) (or normal 
size) to insure that the amount of waste water 
entering the trap only partially fills the waste branch. 
A three (3) inch (76 mm) floor drain would thus 
require a four (4) inch (102 mm) trap, a four (4) inch 
(102 mm) floor drain, and five (5) inch (127 mm) 
trap, etc., for the reasons previously stated. 

WHEN IN DOUBT, CHECK WITH YOUR LOCAL 
ADMINISTRATIVE AUTHORITY. 



183 



UNIFORM PLUMBING CODE 



^ 



184 



APPENDIX C 

ADDITIONAL REFERENCED STANDARDS 



Appendix C contains other applicable standards not 
listed in Table 14-1 which are provided for assisting 
in the listing of products and installation of products. 



DESIGNATION TITLE 

ANSI 

A1 12.1.2 
A1 12.1.7 
B2.1 
Z21.10.1 



Z21.10.3 

Z21.70 
Z124.8 

ANSI/AGA 

LC1-91 

ANSI/ASME 

A112.26.1M 



ANSI/ASSE 



Air Gaps on Plumbing Systems 

Vacuum Breakers, Pressure Type 

Pipe Threads (Except Dry Seal) 

Gas Water Heaters, Volume I, 
Storage Water Heaters with Input 
Ratings of 75,000 Btu per Hour or 
less 

Gas Water Heaters, Volume III, 
Storage Water Heaters with Input 
Ratings Above 75,000 Btu per 
Hour, Circulating and Instantaneous 

Earthquake Actuated Automatic 
Gas Shutoff Systems 

Plastic Bathtub Liners 



Interior Fuel Gas Piping Systems 
Using Corrugated Stainless Steel 
Tubing 



Water Hammer Arresters 



Reserved 



ANS1/AWWA 



C213 



Fusion-Bonded Epoxy Coating for 
the Interior and Exterior of Steel 
Water Pipelines 



C507 



Ball Valves 6 in. through 48 in. (152 
mm through 1219 mm) 



ANSI/NFPA 


Reserved 


ANSI/UL 




343 


Pumps for Oil-Burning Appliances 


ASTM 




B587 


Welded Brass Tube 


B642 


Welded Copper-Alloy UNS No. 
C21 000 Water Tube 


C412 


Concrete Drain Tile 


C425 


Compression Joints for Vitrified 
Clay Pipe and Fittings 


D2465 


Threaded Acrylonitrile-Butadiene- 
Styrene (ABS) Plastic Pipe Fittings, 
Schedule 80 



F845 



Plastic Insert Fittings For 
Polybutylene (PB) Tubing 



Other Referenced Specifications 
AHAM Reserved 



ARI 


Reserved 


ASSE 


Reserved 


AWS 


Reserved 



185 



Appendix C 






AWWA 






C506 


Backflow Prevention Devices - 
Reduced Pressure Principle and 






Double Check Valve 


PS 42 


CISPI 


Reserved 


PS 43 


FEDERAL SPECIFICATIONS (FS) 








PS 48 


A-A-51145C 


Flux, Soldering, Non-Electronic, 
Paste and Liquid 


PS 50 


MIL-F-18180C1 


Flanges and Flanged Fittings, Pipe, 
Steel (150, 300, 400, 600, 900, 






1 500, and 2500 pounds) 


PS 52 


MIL-F-18180-5C1 Flanges and Flanged Fittings, Pipe, 


PS 54 




Steel, Class 150, 300, 400, 






600, 900, 1600, and 2500 Threaded 


PS 57 



Flanges 

MIL-P-17552 Pumps, Centrifugal, Water, 

Horizontal, General Sen/ice; and 
Pumps, Centrifugal Water, 
Horizontal, Boiler-Feed; Electric 
Motor or Steam Driven 

MIL-P-21251C Plumping Units, Sewage, Duplex, 
Automatic, Wet-Pit-Type 



PS 59 



PS 60 



0-F-499C(1) 


Flux, Brazing (Silver Brazing Faller 
Metal, Low Melting Point) 


PS 63 
PS 67 


WW-U-516A 


Unions, Brass or Bronze, 250 
pound 


PS 73 


IAPMO 




PS 81 


IS 21 


Welded Copper and Copper Alloy 
Water Tube (Installation) 


PS 87 


PS1 


Prefabricated Septic Tanks 


PS 92 


PS 25 


Fittings for Joining Polyethylene 
Pipe for Water Service and Yard 


PS 96 




Piping 


SPS2 


PS 34 


Polyethylene Encasement Sleeve 
for Potable Water Pipe and Tubinq 


SPS3 



UNIFORM PLUMBING CODE 

For Use With Thermoplastic Gas 
Pressure Pipe 

Pipe Alignment and Secondary 
Support Systems 

Cushioned Bathtubs And Whirlpool 
Bathtub Appliances 



Material Safety Data Verification 
For Plumbing Products 

Dual Flush Devices For Water 
Closets 

Sumps and Sewage Ejector Tanks 

Metallic and Plastic Utility Boxes 

PVC Hydraulically Actuated 
Diaphragm Type Water Control 
Valves 

Septic Effluent and Waste Water 
Diverter Valves 

Sewage Holding Tank Containing 
Sewage Ejector Pump for Direct 
Mounted Water Closet 

Plastic Leaching Chambers 

Early-Closure Replacement 
Flappers or Early-Closure 
Replacement Flapper With 
Mechanical Assemblies 

Dental Vacuum Pumps 

Precast Concrete Seepage Pit 
Liners and Covers 

Diverter and Shutt-Off Valves for 
Pool/Spa 

Heat Exchangers 

Passive Direct Solar Water Heaters 

Prefabricated Plastic Spa Units 

Skimmers (Spas, Hot Tubs and 
Swimming Pools) 



PS 39 



Testing Mechanical Fittings 
Composed of Multiple Components 
For Various Fitting Configuration 



186 



ADDITIONAL REFERENCED STANDARDS 



Appendix C 



SPS4 



WQA 

S-100 

S-200 
S-300 



Special Use Suction Fittings for 
Swimming Pools, Spas and Hot 
Tubs (For Suction Side Automatic 
Swimming Pool Cleaners) 



MSS 




MSS-SP-84 


Cast Iron Sling Valves, Flanged and 
Threaded Ends 


NFPA 




56F 


(Incorporated into NFPA 99 - 
Health Care Facilities) 


NSF 


Reserved 


PDI 


Reserved 


SAMA 




LF6a 


Medical Care Facility Brassware 


SSPMA 


Reserved 


UL 




125 


Valves for Anhydrous and LP-Gas 
(Other Than Safety Relief) 


132 


Relief Valves and Automatic Gas 
Shutoff Devices For Hot Water 
Supply Systems 


378 


Draft Equipment 



Household Commercial and 
Portable Exchange Water Softeners 

Household and Commercial Water 
Filters 

Point-of-Use Low Pressure Reverse 
Osmosis Drinking Water Systems 



wwv 

54D 
58b 



Bronze Gate Valves 
Cast Iron Gate Valves 



187 



UNIFORM PLUMBING CODE 



188 



APPENDIX D 

SIZING STORMWATER DRAINAGE SYSTEMS 



D 1 Roof Drainage 

The rainfall rates in Table D-l should be used for 
design unless higher values are established locally. 



TABLE D-1 

Maximum Rates of Rainfall for Various Cities 

The rainfall rates in this table are based on U.S. Weather Bureau 
Technical Paper No. 40, Chart 14: 100- Year 60-Minute Rainfall (inches). 





Storm Drainage 


States and Cities 


60-Minute Duration, 100-Year Return 


Inches/Hour 


GPM/Square Foot 


ALABAMA 






Birmingham 


3.7 


0.038 


Huntsville 


3.3 


0.034 


Mobile 


4.5 


0.047 


Montgomery 


3.8 


0.039 


ALASKA 






Aleutian Islands 


1.0 


0.010 


Anchorage 


0.6 


0.006 


Bethel 


0.8 


0.008 


Fairbanks 


1.0 


0.010 


Juneau 


0.6 


0.006 


ARIZONA 






Flagstaff 


2.3 


0.024 


Phoenix 


2.2 


0.023 


Tucson 


3.0 


0.031 


ARKANSAS 






Eudora 


3.8 


0.039 


Ft. Smith 


3.9 


0.041 


Jonesboro 


3.5 


0.036 


Little Rock 


3.7 


0.038 


CALIFORNIA 






Eureka 


1.5 


0.016 


Lake Tahoe 


1.3 


0.014 


Los Angeles 


2.0 


0.021 


Lucerne Valley 


2.5 


0.026 


Needles 


1.5 


0.016 


Palmdale 


3.0 


0.031 


Redding 


1.5 


0.016 


San Diego 


1.5 


0.016 


San Francisco 


1.5 


0.016 


San Luis Obispo 


1.5 


0.016 



189 



Appendix D 



UNIFORM PLUMBING CODE 



TABLE D-1 (Continued) 

Maximum Rates of Rainfall for Various Cities 





Storm Drainage 


States and Cities 


60-Minute Duration, 100- Year Return 


Inches/Hour 


GPM/Square Foot 


COLORADO 






Craig 


1.5 


0.016 


Denver 


2.2 


0.023 


Durango 


1.8 


0.019 


Stratton 


3.0 


0.031 


CONNECTICUT 






Hartford 


2.8 


0.029 


New Haven 


3.0 


0.031 


DELAWARE 






Dover 


3.5 


0.036 


Rehobeth Beach 


3.6 


0.037 


DISTRICT OF 






COLUMBIA 






Washington 


4.0 


0.042 


FLORIDA 






Daytona Beach 


4.0 


0.042 


Ft. Myers 


4.0 


0.042 


Jacksonville 


4.3 


0.045 


Melbourne 


4.0 


0.042 


Miami 


4.5 


0.047 


Palm Beach 


5.0 


0.052 


Tampa 


4.2 


0.044 


Talahassee 


4.1 


0.043 


GEORGIA 






Atlanta 


3.5 


0.036 


Brunswick 


4.0 


0.042 


Macon 


3.7 


0.038 


Savannah 


4.0 


0.042 


Thomasville 


4.0 


0.042 


HAWAII 




Rainfall rates in the Hawaiian Islands vary from 1 


-1/2 inches/hour to 8 


inches/hour, depending on location and elevatior 


\. Consult local data. 


IDAHO 






Boise 


1.0 


0.010 


Idaho Falls 


1.2 


0.012 


Lewiston 


1.0 


0.010 


Twin Falls 


1.1 


0.011 


ILLINOIS 






Chicago 


2.7 


0.028 


Harrisburg 


3.1 


0.032 


Peoria 


2.9 


0.030 


Springfield 


3.0 


0.031 



190 



SIZING STORMWATER DRAINAGE SYSTEMS 



Appendix D 



TABLE D-1 (Continued) 

Maximum Rates of Rainfall for Various Cities 





Storm Drainage 


States and Cities 


60-Minute Duration, 100-Year Return 


Inches/Hour 


GPM/Square Foot 


INDIANA 






Evansville 


3.0 


0.031 


Indianapolis 


2.8 


0.029 


Richmond 


2.7 


0.028 


South Bend 


2.7 


0.028 


IOWA 






Council Bluffs 


3.7 


0.038 


Davenport 


3.0 


0.031 


Des Moines 


3.4 


0.035 


Sioux City 


3.6 


0.037 


KANSAS 






Goodland 


3.5 


0.036 


Safina 


3.8 


0.039 


Topeka 


3.8 


0.039 


Wichita 


3.9 


0.041 


KENTUCKY 






Bowling Green 


2.9 


0.030 


Lexington 


2.9 


0.030 


Louisville 


2.8 


0.029 


Paducah 


3.0 


0.031 


LOUISIANA 






Monroe 


3.8 


0.039 


New Orleans 


4.5 


0.047 


Shreveport 


4.0 


0.042 


MAINE 






Bangor 


2.2 


0.023 


Kittery 


2.4 


0.025 


Millinocket 


2.0 


0.021 


MARYLAND 






Baltimore 


3.6 


0.037 


Frostburg 


2.9 


0.030 


Ocean City 


3.7 


0.038 


MASSACHUSETTS 






Adams 


2.6 


0.027 


Boston 


2.7 


0.028 


Springfield 


2.7 


0.028 


MICHIGAN 






Detroit 


2.5 


0.026 


Grand Rapids 


2.6 


0.027 


Kalamazoo 


2.7 


0.028 


Sheboygan 


2.1 


0.022 


Traverse City 


2.2 


0.023 



191 



Appendix D 



UNIFORM PLUMBING CODE 



TABLE D-1 (Continued) 

Maximum Rates of Rainfall for Various Cities 





Storm Drainage 


States and Cities 


60-Minute Duration, 100- Year Return 


Inches/Hour 


GPM/Square Foot 


MINNESOTA 






Duluth 


2.6 


0.027 


Grand Forks 


2.5 


0.026 


Minneapolis 


3.0 


0.031 


Worthington 


3.4 


0.035 


MISSISSIPPI 






Biloxi 


4.5 


0.047 


Columbus 


3.5 


0.036 


Jackson 


3.8 


0.039 


MISSOURI 






Independence 


3.7 


0.038 


Jefferson City 


3.4 


0.035 


St. Louis 


3.2 


0.033 


Springfield 


3.7 


0.038 


MONTANA 






Billings 


1.8 


0.019 


Glendive 


2.5 


0.026 


Great Falls 


1.8 


0.019 


Missoula 


1.3 


0.014 


NEBRASKA 






Omaha 


3.6 


0.037 


North Platte 


3.5 


0.036 


Scotts Bluff 


2.8 


0.029 


NEVADA 






Las Vegas 


1.5 


0.016 


Reno 


1.2 


0.012 


Winnemucca 


1.0 


0.010 


NEW HAMPSHIRE 






Berlin 


2.2 


0.023 


Manchester 


2.5 


0.026 


NEW JERSEY 






Atlantic City 


3.4 


0.035 


Paterson 


3.0 


0.031 


Trenton 


3.2 


0.033 


NEW MEXICO 






Albuquerque 


2.0 


0.021 


Carlsbad 


2.6 


0.027 


Gallup 


2.1 


0.022 


NEW YORK 






Binghamton 


2.4 


0.025 


Buffalo 


2.3 


0.024 


New York 


3.1 


0.032 


Schenectady 


2.5 


0.026 


Syracuse 


2.4 


0.025 



192 



SIZING STORMWATER DRAINAGE SYSTEMS 



Appendix D 



TABLE D-1 (Continued) 

Maximum Rates of Rainfall for Various Cities 





Storm Drainage 


States and Cities 


60-Minute Duration, 100-Year Return 


Inches/Hour 


GPM/Square Foot 


NORTH CAROLINA 






Ashville 


3.2 


0.033 


Charlotte 


3.4 


0.035 


Raleigh 


4.0 


0.042 


Wilmington 


4.4 


0.046 


NORTH DAKOTA 






Bismarck 


2.7 


0.028 


Fargo 


2.9 


0.030 


Mi not 


2.6 


0.027 


OHIO 






Cincinnati 


2.8 


0.029 


Cleveland 


2.4 


0.025 


Columbus 


2.7 


0.028 


Toledo 


2.6 


0.027 


Youngstown 


2.4 


0.025 


OKLAHOMA 






Boise City 


3.4 


0.035 


Muskogee 


4.0 


0.042 


Oklahoma City 


4.1 


0.043 


OREGON 






Medford 


1.3 


0.014 


Portland 


1.3 


0.014 


Ontario 


1.0 


0.010 


PENNSYLVANIA 






Erie 


2.4 


0.025 


Harrisburg 


2.9 


0.030 


Philadelphia 


3.2 


0.033 


Pittsburgh 


2.5 


0.026 


Scranton 


2.8 


0.029 


RHODE ISLAND 






Newport 


3.0 


0.031 


Providence 


2.9 


0.030 


SOUTH CAROLINA 






Charleston 


4.1 


0.043 


Columbia 


3.5 


0.036 


Greenville 


3.3 


0.034 


SOUTH DAKOTA 






Lemmon 


2.7 


0.028 


Rapid City 


2.7 


0.028 


Sioux Falls 


3.4 


0.035 



193 



Appendix D 



UNIFORM PLUMBING CODE 



TABLE D-1 (Continued) 

Maximum Rates of Rainfall for Various Cities 





Storm Drainage 


States and Cities 


60-Minute Duration, 100- Year Return 


Inches/Hour 


GPM/Square Foot 


TENNESSEE 






Knoxville 


3.1 


0.032 


Memphis 


3.5 


0.036 


Nashville 


3.0 


0.031 


TEXAS 






Corpus Christi 


4.6 


0.048 


Dallas 


4.2 


0.044 


El Paso 


2.0 


0.021 


Houston 


4.6 


0.048 


Lubbock 


3.3 


0.034 


San Antonio 


4.4 


0.046 


UTAH 






Bluff 


2.0 


0.021 


Cedar City 


1.5 


0.016 


Salt Lake City 


1.3 


0.014 


VERMONT 






Bennington 


2.5 


0.026 


Burlington 


2.3 


0.024 


Rutland 


2.4 


0.025 


VIRGINIA 






Charlottesville 


3.4 


0.035 


Richmond 


4.0 


0.042 


Roanoke 


3.3 


0.034 


Norfolk 


4.0 


0.042 


WASHINGTON 






Seattle 


1.0 


0.010 


Spokane 


1.0 


0.010 


Walla Walla 


1.0 


0.010 


WEST VIRGINIA 






Charleston 


2.9 


0.030 


Martinsburg 


3.0 


0.031 


Morgantown 


2.7 


0.028 


WISCONSIN 






La Cross 


2.9 


0.030 


Green Bay 


2.5 


0.026 


Milwaukee 


2.7 


0.028 


Wausau 


2.5 


0.026 


WYOMING 






Casper 


1.9 


0.020 


Cheyenne 


2.5 


0.026 


Evaston 


1.3 


0.014 


Rock Springs 


1.4 


0.015 



194 



SIZING STORMWATER DRAINAGE SYSTEMS 



Appendix D 



D 2 Sizing by Flow Rate 

Storm drainage systems can be sized by stormwater 
flow rates, using the appropriate GPM/ square foot of 
rainfall listed in Table D-l for the local area. 
Multiplying the listed GPM /square foot by the roof 
area being drained by each inlet (in square feet), 
produces the gallons per minute (GPM) of required 
flow for sizing each drain inlet. The flow rates (GPM) 
can then be added to determine the flows in each 
section of the drainage system. Required pipe sizes for 
various flow rates (GPM) are listed in Table 11-1 and 
Table 11-2. 

D 3 Sizing by Roof Area 

Storm drainage systems can be sized using the roof 
area served by each section of the drainage system. 
Maximum allowable roof areas with various rainfall 
rates are listed in Table 11-1 and Table 11-2, along 



with the required pipe sizes. Using this method, it 
may be necessary to interpolate between two listed 
rainfall rate columns (inches per hour). To determine 
the allowable roof area for a listed size pipe at a 
listed slope, divide the allowable square feet of roof 
for a one (1) inch (25.4 mm/hr) rainfall rate by the 
listed rainfall rate for the local area. For example, the 
allowable roof area for a six (6) inch (152 mm) drain 
at one-eighth (1/8) inch (3.2 mm) slope with a 
rainfall rate of 3.2 inches (81 mm/hr) is 21,400/3.2 = 
6688 (621.3m 2 ) square feet. 

D 4 Capacity of Rectangular Scuppers 

Table D-2 lists the discharge capacity of various 
width rectangular roof scuppers with various heads 
of water. The maximum allowable level of water on 
the roof should be obtained from the structural 
engineer, based on the design of the roof. 



TABLE D-2 

Discharge from Rectangular Scuppers - Gallons per Minute 



Water Head, Width of Scupper in Inches 

Inches 6 12 18 24 30 



36 



1/2 


6 


13 


19 


25 


32 


38 


1 


17 


35 


53 


71 


89 


107 


1-1/2 


31 


64 


97 


130 


163 


196 


2 




98 


149 


200 


251 


302 


2-1/2 




136 


207 


278 


349 


420 


3 




177 


271 


364 


458 


551 


3-1/2 






339 


457 


575 


693 


4 






412 


556 


700 


844 



TABLE D-2 (Metric) 
Discharge from Rectangular Scuppers - Liters per Second 



iter Head 




Width of Scupper 


in Millimeters 




(mm) 


152 


305 


457 


610 


762 


914 


13 


0.4 


0.8 


1.2 


1.6 


2.0 


2.4 


25 


1.1 


2.2 


3.3 


4.5 


5.6 


6.8 


38 


2.0 


4.0 


6.1 


8.2 


10.3 


12.4 


51 




6.2 


9.4 


12.6 


15.8 


19.1 


64 




8.6 


13.1 


17.5 


22.0 


26.5 


76 




11.2 


17.1 


23.0 


28.9 


34.8 


89 






21.4 


28.8 


36.3 


43.7 


102 






26.0 


35.1 


44.2 


53.3 



Notes: 

1. Table D-2 is based on discharge over a rectangular weir with end contractions. 

2. Head is the depth of water above bottom of the scupper opening. 

3. The height of the scupper opening should be at least two (2) times the design head. 

4. Coordinate the allowable head of water with the structural design of the roof. 



195 



UNIFORM PLUMBING CODE 



"> 



196 



APPENDIX E 

MANUFACTURED/MOBILE HOME PARKS AND 
RECREATIONAL VEHICLE PARKS 



Part A 

Manufactured/Mobile Home (M/H) Park 
Definitions and General Requirements 
E 1 Manufactured/Mobile Home 

A structure, transportable in one (1) or more sections, 
which in the traveling mode, is eight (8) body feet 
(2438 mm) or more in width and forty (40) body feet 
(12192 mm) or more in length, or when erected on 
site, is three hundred twenty (320) or more square 
feet (29.7 m 2 ), and which is built on a permanent 
chassis, and designed to be used as a dwelling with 
or without a permanent foundation, when connected 
to the required utilities, and includes the plumbing, 
heating, air conditioning, and electrical systems 
contained therein. For further clarification of 
definition, see Federal Regulation 24 CFR. 

E 1.1 Manufactured/Mobile Home Accessory 
Building or Structure - A building or structure 
which is an addition to or supplements the facilities 
provided to a M/H. It is not a self-contained, 
separate, habitable building or structure. Examples 
are awnings, cabanas, ramadas, storage structures, 
carports, fences, windbreaks, or porches. 

E 2 Manufactured/Mobile Home Lot - A portion of 
a M/H park designed for the accommodation of one 
M/H and its accessory buildings or structures for the 
exclusive use of the occupants. 

E 3 Manufactured/Mobile Home Park - A parcel 
(or contiguous parcels) of land which has been so 
designated and improved that it contains two (2) or 
more M/H lots available to the general public for the 
placement thereon of M/H for occupancy. 

General 

E 4 The M/H park plumbing and drainage systems 
shall be designed and installed in accordance with 
the requirements of this appendix and the 
requirements of this Code. 

E 5 Before any plumbing or sewage disposal 
facilities are installed or altered in any M/H park, 
duplicate plans and specifications shall be filed and 
proper permits obtained from the department or 
departments having jurisdiction. Plans shall show in 
detail: 

(a) Plot plan of the park drawn to scale, indicating 
elevations, property lines, driveways, existing or 
proposed buildings and the sizes of M/H lots. 



(b) Complete specification and piping layout of 
proposed plumbing systems or alteration. 

(c) Complete specification and layout of proposed 
sewage disposal system or alteration. 

(d) Plans and specifications submitted to the 
enforcement agency shall be of sufficient clarity to 
indicate the nature and extent of the work proposed 
and show in detail that such work will conform to 
the provisions of this Code. 

Part B 

Manufactured/Mobile Home Park Drainage 
System Construction 

E 6 Drainage Systems 

A drainage system shall be provided in all M/H 
parks for conveying and disposing of all sewage. 
Wherever feasible, connection shall be made to a 
public system. All new improvements shall be 
designed, constructed and maintained in accordance 
with applicable laws and regulations. Where the 
drainage lines of the M/H park are not connected to 
a public sewer, all proposed sewage disposal 
facilities shall be approved by the Authority Having 
Jurisdiction prior to construction. 

E7 Material 

Pipe and fittings installed underground in M/H 
park drainage systems shall be of material approved 
for the purpose. M/H lot drainage inlets and 
extensions to grade shall be of material approved for 
underground use within a building. 

E 8 Drainage (Sewage) Lines 

All drainage (sewage) collection lines shall be located 
in trenches of sufficient depth to be free of breakage 
from traffic or other movements and shall be 
separated from the park water supply system as 
specified in this Code. Drainage (sewage) lines shall 
have a minimum size and slope as specified in 
Tables E-l and E-2. 

E 9 M/H Lot Drainage inlet and Lateral 

(a) Size. Each lot shall be provided with a drainage 
inlet not less than three (3) inches (76 mm) in 
diameter. 

(b) The lateral line from the inlet to the sewage 
drain line shall slope at least one-fourth (1/4) inch 
per foot (20.9 mm/m). All joints shall be watertight. 

(c) All materials used for drainage connections 

197 



Appendix E 



UNIFORM PLUMBING CODE 



between a M/H and the lot drainage inlet shall be 
semi-rigid, corrosion resistant non-absorbent and 
durable. The inner surface shall be smooth. 

(d) Provision shall be made for plugging or capping 
the sewage drain inlet when a M/H does not occupy 
the lot. Surface drainage shall be diverted away from 
the inlet. The rim of the inlet shall extend not more 
than four (4) inches (102 mm) above ground 
elevation. 

E 10 Location of Lot Drain Inlet 

Each lot drainage inlet shall be located in the rear 
third section and within four (4) feet (1219 mm) of 
the proposed location of the M/H. 

E11 Pipe Size 

(a) Each M/H lot drainage inlet shall be assigned a 
waste loading value of twelve (12) fixture units and 
each park drainage system shall be sized according 
to Table E-l or as provided herein. Drainage laterals 
shall be not less than three (3) inches (76 mm) in 
diameter. 

(b) A park drainage system which exceeds the 



fixture unit loading of Table E-l or in which the 
grade and slope of drainage pipe does not meet the 
minimum specified in Table E-2 shall be designed by 
a registered professional engineer. 

E12 M/H Drain Connector 

(a) A M/H shall be connected to the lot drainage 
inlet by means of a drain connector consisting of 
approved pipe not less than Schedule 40, appropriate 
fittings and connectors, and not less in size than the 
M/H drainage outlet. An approved cleanout shall be 
provided between the M/H and the lot drainage 
inlet. The fitting connected to the lot drainage inlet 
shall be a directional fitting to discharge the flow 
into the drainage inlet. 

(b) A drain connector shall be installed or maintained 
with a grade not less than one-fourth (1/4) inch per 
foot (20.9 mm/m). A drain connector shall be gastight 
and no longer than necessary to make the connection 
between the M/H outlet and the drain inlet on the lot. 
A flexible connector may be used at the lot drainage 
inlet area only. Each lot drainage inlet shall be capped 
gastight when not in use. 



TABLE E-1 

Drainage Pipe Diameter and Number of Fixture Units on Drainage System 
Size of Drainage Pipe Maximum Number 
Inches 

2* 

3 

4 

5 

6 

8 

10 

12 
* Except 6 unit fixtures 



(mm) 


of Fixture Units 


51 


8 


76 


35 


102 


256 


127 


428 


152 


720 


203 


2640 


254 


4680 


305 


8200 



TABLE E-2 

Minimum Grade and Slope of Drainage Pipe 





Slope per 






Slope per 


Pipe Size 


100 ft. 


(30.5 m) 


Pipe 


Size 


100ft.(30.5m) 


Inches (mm) 


Inches 


(mm) 


Inches 


(mm) 


Inches (mm) 


2 51 


25 


635 


6 


152 


8 203 


3 76 


25 


635 


8 


203 


4 102 


4 102 


15 


381 


10 


254 


3 1 /2 89 


5 127 


11 


279 


12 


305 


3 76 



198 



MANUFACTURED/MH PARKS AND RV PARKS 



Appendix E 



Parte 

M/H Park Water Supply 

E13 General Requirements 

An accessible and adequate supply of potable water 
shall be provided in each M/H park. Where a public 
supply of water of satisfactory quantity, quality and 
pressure is available at or within the boundary of the 
park site, connection shall be made thereto and its 
supply used exclusively. When a satisfactory public 
water supply is not available, a private water supply 
system shall be developed and used as approved by 
the Authority Having Jurisdiction. 

E14 Lot Service Outlet Size 

Each M/H lot shall be provided with a water service 
outlet delivering potable water. The water service 
outlet riser shall be not less than three-fourths (3/4) 
inch (19.1 mm) nominal pipe size and capable of 
delivering twelve (12) fixture units. 

E15 Location of Water Service 

Each lot water service outlet shall be located in the 
rear third section and within four (4) feet (1219 mm) 
of the proposed location of the M/H. 

E 16 Pressure 

Each M/H park water distribution system shall be so 
designed and maintained as to provide a pressure of 
not less than twenty (20) pounds per square inch 
(138 kPa) at each M/H lot at maximum operating 
conditions. 

E 17 Water Distribution Piping 

Park water distribution systems shall be designed to 
deliver a minimum of twelve (12) fixture units of 
water to each lot and installed with materials as set 
forth in Chapter 6 and /or Appendix A of this Code. 
E18 Shutoff Valve 

A separate water shutoff valve shall be installed in 
each water service outlet at each M/H lot. Where a 
listed backflow protective device is installed, the 
service shutoff shall be located on the supply side of 
such device. 

E19 Backflow Preventer 

Whenever a condition exists in the plumbing of a 
M/H that may create a cross connection, a listed 
backflow preventer shall be installed in the water 
service line to the M/H at or near the water service 
outlet. When a hose bibb or outlet is installed on the 
supply outlet riser in addition to the service 
connector, a listed backflow preventer shall be 
installed on each additional outlet. 
E 20 Pressure Relief Valve 

Whenever it is required to install a backflow 
preventer at the M/H lot service outlet, a listed 
pressure relief valve shall be installed in the water 



service line on the discharge side of the backflow 
preventer. Pressure relief valves shall be set to 
release at a pressure not to exceed one hundred fifty 
(150) pounds per square inch (1034 kPa). Pressure 
relief valves shall discharge toward the ground. 
Backflow preventers and pressure relief valves shall 
be at least twelve (12) inches (305 mm) above the 
ground. 
E 21 Mechanical Protection 

All park water service outlets, backflow preventers 

and pressure relief valves shall be protected from 

damage by vehicles or other causes. Such protection 

may consist of posts, fencing, or other permanent 

barriers. 

E22 M/H Water Connector 

A M/H shall be connected to the park water service 
outlet by a flexible connector, such as copper tubing or 
other approved material, not less than three quarter 
(3/4) inch nominal (19.1 mm) interior diameter. 

E 23 Water Conditioning Equipment 

(a) Permit Required. A permit shall be obtained 
from the Authority Having Jurisdiction prior to 
installing any water conditioning equipment on a 
M/H lot. Approval of the park operator is required 
on all applications for a permit to install such 
equipment. If the water conditioning equipment is of 
the regenerating type, and the park drainage system 
discharges into public sewer, approval of the 
sanitary district or agency having jurisdiction over 
the public sewer is required. 

(b) Approval. Regenerating water conditioning 
equipment shall be listed and labeled by an 
approved listing agency. 

(c) Installation. Regenerating units shall discharge 
the effluent of regeneration into a trap not less than 
one and one-half (1-1/2) inches (38 mm) in diameter 
connected to the M/H park drainage system. An 
approved air gap shall be installed on the discharge 
line a minimum of twelve (12) inches (305 mm) 
above the ground. 

E24 Testing 

Installations shall be tested and inspected as 
required by Chapter 3 of this Code. 

PartD 

M/H Park Fuel Gas Equipment and Installation 

E25 General 

Except as otherwise permitted or required by this 
appendix, all fuel gas equipment and installations in 
M/H parks shall comply with the provisions of this 
Code. The provisions of this appendix do not apply 
to M/H gas piping and equipment. 

199 



Appendix E 



UNIFORM PLUMBING CODE 



E 26 Permits 

Before any gas equipment or installations are 
constructed or altered in a M/H park, a written 
permit shall be obtained from the Authority Having 
Jurisdiction as provided in Chapter 1 of this Code. 
E27 Plans 

Two complete sets of plans and specifications shall 
be submitted with the application as provided in 
Chapter 1 of this Code. Load calculations of the gas 
piping system shall be provided with the plans. 
E 28 Required Gas Supply 

The minimum hourly volume of gas required at each 
M/H lot outlet or any section of the M/H park gas 
piping system shall be calculated as shown in Table 
E-3. 

E 29 Required gas supply for buildings or other fuel 
gas consuming appliances connected to the M/H 
park gas piping system shall be calculated as 
provided in Chapter 12 of this Code. 

E 30 Installation 

(a) All gas piping installed below ground shall have 
a minimum earth cover of eighteen (18) inches (457 
mm). 

(b) No gas piping shall be installed above ground 
under any M/H. 

E 31 Location 

Gas piping shall not be installed underground 
beneath buildings or that portion of the M/H lot 



reserved for the location of M/H, M/H accessory 
buildings or structures, concrete slabs, or automobile 
parking, unless installed in a gastight conduit. 

The conduit shall be of material approved for 
installation underground beneath buildings and not 
less than Schedule 40 pipe. The interior diameter of 
the conduit shall be not less than one-half (1/2) inch 
(12.7 mm) larger than the outside diameter of the gas 
piping. 

The conduit shall extend to a point not less than 
twelve (12) inches (305 mm) beyond any area where 
it is required to be installed, or the outside wall of a 
building, and the outer ends shall not be sealed. 
Where the conduit terminates within a building, it 
shall be readily accessible and the space between the 
conduit and the gas piping shall be sealed to prevent 
leakage of gas into the building. 

A gas piping lateral terminating in a M/H lot 
outlet riser surrounded by a concrete slab shall not 
be required to be installed in a conduit, provided the 
concrete slab is entirely outside the wall line of the 
M/H, is not continuous with any other concrete slab, 
and is used for stabilizing other utility connections. 
E32 System Shutoff Valve 

A readily accessible and identified, approved shutoff 
valve controlling the flow of gas to the entire gas 
piping system shall be installed near the point of 
connection to the service piping or supply 
connection of the liquefied petroleum gas tank. 



TABLE E-3 

Demand Factors for Calculating Master Meter 
Gas Piping Systems in M/H Parks 
Number of M/H Lots BTU/Hr. per M/H Lot Watts/Hr. per M/H Lot 



1 


250,000 


73,275 


2 


234,000 


68,585 


3 


208,000 


60,965 


4 


192,000 


56,295 


5 


184,000 


53,930 


6 


174,000 


50,999 


7 


166,000 


48,655 


8 


162,000 


47,482 


9 


158,000 


46,310 


10 


154,000 


45,137 


11-20 


132,000 


38,689 


21-30 


124,000 


36,344 


31-40 


118,000 


34,586 


41-60 


112,000 


32,827 


Over 60 


102,000 


29,896 



200 



MANUFACTURED/MH PARKS AND RV PARKS 



Appendix E 



E33 M/H Lot Shutoff Valve 

Each M/H lot shall have an approved gas shutoff 
valve installed upstream of the M/H lot gas outlet 
and located on the outlet riser at a height of not less 
than four (4) inches (102 mm) above grade. Such 
valve shall not be located under any M/H. 
Whenever the M/H lot outlet is not in use, the outlet 
shall be equipped with an approved cap or plug to 
prevent accidental discharge of gas. 

E34 Lot Gas Outlet 

(a) Each M/H lot piped for gas shall be provided 
with an individual outlet riser at the M/H lot. 

(b) The M/H lot gas outlet shall terminate with the 
service connection in the rear third section and 
within four (4) feet (1219 mm) of the proposed 
location of the M/H. 

E 35 Gas Connector 

Each M/H shall be connected to the lot outlet by an 
approved or listed gas connector, a maximum of six 
(6) feet (1829 mm) in length. Approved pipe fittings 
may be used between the flexible connector and the 
lot gas outlet when the distance between the lot gas 
outlet and the gas service connection exceeds that 
required to make a safe installation with only an 
approved or listed gas connector. Gas connectors 
shall be of a size to adequately supply the total 
demand of the connected M/H. 

E 36 Mechanical Protection 

All gas outlet risers, regulators, meters, valves or 
other exposed equipment shall be protected from 
mechanical damage. Such protection may consist of 
posts, fencing, or other permanent barriers. 

Atmospherically controlled regulators shall be 
installed in such a manner that moisture cannot enter 
the regulator vent and accumulate above the 
diaphragm. Where the regulator vent may be 
obstructed due to snow and icing conditions, shields, 
hoods, or other suitable devices shall be provided to 
guard against closing the vent opening. 

E 37 Gas Meters 

(a) Meters shall not be installed in unvented or 
inaccessible locations, or closer than three (3) feet 
(914 mm) from sources of ignition. 

(b) When meters are installed, they shall not depend 
on the gas outlet riser for support, but shall be 
adequately supported by a post or bracket placed on 
a firm footing, or other means providing equivalent 
support. 

E 38 Gas Piping Size 

(a) Natural Gas. The size of each section of natural 
gas piping systems shall be determined as specified 
in Chapter 12 of this Code or other standard 



engineering methods acceptable to the Authority 
Having Jurisdiction. 

(b) Liquefied Petroleum Gas. The size of each 
section of liquefied petroleum gas piping systems 
may be determined by Chapter 12 of this Code or 
other standard engineering methods acceptable to 
the Authority Having Jurisdiction. 

E 39 Maintenance 

The M/H park operator shall be responsible for 
maintaining all gas piping installations and 
equipment in good working condition. 

E 40 Authority to Disconnect 

The Administrative Authority or the serving gas 
supplier is hereby authorized to disconnect any gas 
piping or appliance, or both, which shall be found 
not to conform to the requirements of this Code or 
which may be found defective and in such condition 
as to endanger life or property. 

Where such disconnection has been made, a 
notice shall be attached to such gas piping or 
appliance, or both, which shall state the same has 
been disconnected, together with the reasons 
therefor. 

E 41 Inspections and Tests 

Inspections and tests shall be made in accordance 
with Chapters 1 and 12. 

PartE 

Recreational Vehicle Parks Definitions and 
General Requirements 

E 42 Recreational Vehicle - A vehicular type unit 
primarily designed as temporary living quarters for 
recreational, camping, travel or seasonal use, that 
either has its own motive power, or is mounted on or 
towed by another vehicle. The basic entities are: 
camping trailer, fifth wheel trailer, motor home, park 
trailer, travel trailer, and truck camper. 

E 43 Recreational Vehicle Park - A plot of land 
upon which two (2) or more recreational vehicle sites 
are located, established or maintained for occupancy 
by recreational vehicles of the general public as 
temporary living quarters for recreation or vacation 
purpose. 

E 44 Recreational Vehicle Site - A plot of ground 
within a recreational vehicle park intended for the 
accommodation of a recreational vehicle, a tent, or 
other individual camping unit on a temporary basis. 

E 45 General. All plumbing shall be installed in 
accordance with the plumbing codes of the 
Authority Having Jurisdiction and with this 
appendix. 



201 



Appendix E 



UNIFORM PLUMBING CODE 



PartF 

Recreational Vehicle Park Toilet and Shower 
Facilities 

E 46 Toilets and urinals shall be provided at one (1 ) 
or more locations in every recreational vehicle park. 
They shall be convenient of access and shall be 
located within a five hundred (500) foot (152.4 m) 
radius from any recreational vehicle site not 
provided with an individual sewer connection. 

E 47 Facilities for males and females shall be 
appropriately marked. 

E 48 A minimum of one (1) toilet shall be provided 
for each sex up to the first twenty-five (25) sites. For 
each additional twenty-five (25) sites not provided 
with sewer connections, an additional toilet shall be 
provided. 

E 49 The interior finish of walls shall be moisture- 
resistant to a height of four (4) feet (1219 mm) to 
facilitate washing and cleaning. 

E 50 The floors shall be constructed of material 
impervious to water and shall be easily cleanable. 
Any toilet building having water-flush toilets shall 
be provided with a floor drain in the toilet room. 
This drain shall be provided with means to protect 
the trap seal as required by this Code. 

E 51 If water-flush toilets are provided, an equal 
number of lavatories shall be provided for up to six 
(6) toilets. One additional lavatory shall be provided 
for each two (2) toilets when more than six (6) toilets 
are required. Each lavatory basin shall have a piped 
supply of potable water and shall drain into the 
drainage system. 

E 52 If separate facilities are provided for men and 
women, urinals shall be acceptable for no more than 
one-third (1/3) of the toilets required in the men's 
facilities, except that one (1) urinal may be used to 
replace a toilet in a minimum park. Only individual 
stall or wall hung types of urinals shall be installed. 
Floor type trough units shall be prohibited. 

E 53 Toilets shall be of an approved, elongated bowl 
type and shall be provided with seats with open 
fronts. 

E 54 Each toilet shall be in a separate compartment 
and be provided with a door with a latch for privacy 
and a holder or dispenser for toilet paper. Dividing 
walls or partitions shall be at least five (5) feet (1524 
mm) high and shall be separated from the floor by a 
space not greater than twelve (12) inches (305 mm). 

E 55 Toilet compartments shall not be less than 
thirty (30) inches (762 mm) in width, (no toilet shall 
be set closer than fifteen (15) inches (381 mm) from 
its center to a side wall) and there shall be not less 
than thirty (30) inches (762 mm) of clear space in 
front of each toilet. 
202 



E 56 Each toilet room for women shall be provided 
with a receptacle for sanitary napkins. The receptacle 
shall be of durable impervious and readily cleanable 
material, and shall be provided with a lid. 

E 57 Each shower, if provided, shall have a floor area 
of thirty-six (36) inches by thirty-six (36) inches (914 
mm x 914 mm) and shall be capable of encompassing 
a thirty (30) inch (762 mm) diameter circle and shall be 
of the individual type, and each shower area shall be 
visually screened from view, with a minimum floor 
area of thirty-six (36) by thirty-six (36) inches (914 mm 
x 914 mm) per shower and shall be provided with 
individual dressing areas screened from view and 
shall contain a minimum of one (1) clothing hook and 
stool (or equivalent bench area). 

E 58 Each shower area shall be designed to 
minimize the flow of water into the dressing area 
and shall be connected to the drainage system by 
means of a properly vented and trapped inlet. Each 
such area shall have a impervious, skid resistant 
surface, wooden racks (duck boards) over shower 
floors shall be prohibited. 

E 59 Every toilet building shall have a minimum 
ceiling height of seven (7) feet (2134 mm) and unless 
artificial light is provided, a window or skylight, 
area equal to at least ten (10) percent of the floor 
area, shall be provided. 

All doors to the exterior shall open outward, be 
self-closing, and shall be visually screened by means 
of a vestibule or wall to prevent direct view of the 
interior when the exterior doors are open. Such 
screening shall not be required on single toilet units. 

E 60 Every toilet room shall have permanent non- 
closable, screened opening(s), having a total area not 
less than five (5) percent of the floor area, opening 
directly to the exterior in order to provide proper 
ventilation. Listed exhaust fan(s), vented to the 
exterior ,the rating of which in cubic feet per minute 
is at least twenty-five (25) percent of the total volume 
of the room(s) served, shall be considered as meeting 
the requirements of this subsection. All openable 
windows and vents to the outside shall be provided 
with fly proof screens of not less than number 
sixteen (16) mesh. 

PartG 

Recreational Vehicle Park Potable Water Supply 
and Distribution 

E61 Quality 

The supply or supplies of water shall comply with the 
appropriate potable water standards of the state or local 
health authority or, in the absence thereof, with the 
Drinking Water Standard of the Federal Environmental 



MANUFACTURED/MH PARKS AND RV PARKS 



Appendix E 



Protection Agency. (See Part 71 of Title 42 of the Code of 
Federal Regulations, Subpart J.) 
E 62 Sources 

Only water approved by a regulating agency shall be 
acceptable. Where an approved public water supply 
system is available, it shall be used. Where the park 
has its own water supply system, the components of 
the system shall be approved. A water supply 
system which is used on a seasonal basis shall be 
provided with means for draining. 

E 63 Prohibited Connections 

The potable water supply shall not be connected to 
any non potable or unapproved water supply, nor be 
subjected to any backflow or back siphonage. 
E 64 Supply 

The water supply system shall be designed and 
constructed in accordance with the following: 

(a) A minimum of twenty-five (25) gallons (94.6 L) 
per day per site for sites without individual water 
connections. 

(b) A minimum of fifty (50) gallons (189.3 L) per day 
per site for sites with individual water connections. 

(c) A minimum of fifty (50) gallons (189.3 L) per day 
per site if water-flush toilets are provided in rest 
rooms. 

E 65 Pressure and Volume 

Where water is distributed under pressure to any 
individual site, the water supply system shall be 
designed to provide a minimum flow pressure of 
twenty (20) pounds per square inch (137.8 kPa) with 
a minimum flow of two (2) gallons (7.6 L) per minute 
at any outlet. The maximum pressure shall not 
exceed eighty (80) pounds per square inch (551 kPa). 

E66 Outlets 

Water outlets shall be convenient to access and, 
when not piped to individual recreational vehicle 
site, shall not be located farther than three hundred 
(300) feet (91.4 m) from any site. Provisions shall be 
made to prevent accumulations of standing water or 
the creation of muddy conditions at each water 
outlet. 

E 67 Storage Tanks 

Water storage tanks shall be constructed of 
impervious materials, protected against 
contamination, and provided with locked, water 
tight covers. Any overflow or ventilation openings 
shall be down facing and provided with corrosion- 
resistant screening of not less than number twenty- 
four (24) mesh to prevent the entrance of insects and 
vermin. Water storage tanks shall not have direct 
connections to sewers. 



Part H 

Recreational Vehicle Park Water Connections 

for Individual Recreational Vehicles 

E 68 When provided, the water connections for 
potable water to individual recreational vehicle sites 
shall be located on the left rear half of the site (left side 
of RV) within four (4) feet (1219 mm) of the stand. 
E 69 Each potable water connection shall consist of 
a water riser pipe which shall be equipped with a 
threaded male spigot located at least twelve (12) 
inches (305 mm) but not more than twenty-four (24) 
inches (610 mm) above grade level for the 
attachment of a standard water hose. The water riser 
pipe shall be protected from physical damage per 
this Code. This connection shall be equipped with a 
listed anti-siphon backflow prevention device. 

E 70 Drinking Fountains 

If provided, drinking fountains shall be in 
conformance with the requirements of this Code. 

Parti 

Recreational Vehicle Park Drainage System 

E 71 An adequate and approved drainage system 
shall be provided in all recreational vehicle parks for 
conveying and disposing of all sewage. Where 
available, parks shall be connected to a public sewer 
system. 

E72 Material 

Pipe and fittings installed in the drainage system 
shall be of material listed and approved and installed 
per this Code. 

E 73 The minimum diameters of drainage laterals, 
branches and mains serving recreational vehicle sites 
shall be in accordance with the following table: 



Maximum Number of 

Recreational Vehicle 

Stands Served 

5 

36 

71 

120 

440 



Minimum Pipe Sizes 

Inches (ID) Nominal (mm) 

3 76 

4 102 

5 127 

6 152 
8 203 



E 74 The sewer lines shall be located to prevent 
damage from vehicular traffic. 

E 75 Cleanouts shall be provided per Chapter 7 of 
this Code. 

Part J 

Recreational Vehicle Site Drainage System Inlet 

E 76 When provided, the site drainage system inlet 

203 



Appendix E 



UNIFORM PLUMBING CODE 



connections for individual recreational vehicles shall 
be located so as to prevent damage by the parking of 
recreational vehicles or automobiles and shall consist 
of a sewer riser extending vertically to grade. The 
minimum diameter of the sewer riser pipe shall be 
three (3) inches (76 mm) and it shall be provided 
with a four (4) inch (102 mm) inlet or a minimum 
three (3) inch (76 mm) female fitting. 

E 77 When provided, the sewer inlet to individual 
recreational vehicle sites shall be located on the left 
rear half of the site (left side of the RV) within four 
(4) feet (1219 mm) of the stand. 

E 78 The sewer riser pipe shall be firmly imbedded 
in the ground and be protected against damage from 
movement. It shall be provided with a tight-fitting 
plug or cap which shall be secured by a durable 
chain (or equivalent) to prevent loss. 

PartK 

Recreational Vehicle Park Sanitary Disposal 
Stations 

E 79 One (1) recreational vehicle sanitary disposal 
station shall be provided for each one hundred (100) 
recreational vehicle sites, or part thereof, which are 
not equipped with individual drainage system 
connections. 

E 80 Each station shall be level, convenient of access 
from the service road, and shall provide easy ingress 
and egress for recreational vehicles. 

E81 Construction 

Unless other approved means are used, each station 
shall have a concrete slab with drainage system inlet 
located so as to be on the road (left) side of the 
recreational vehicle. The slab shall be not less than 
three (3) feet by three (3) feet (914 mm x 914 mm), at 
least three and one-half (3-1/2) inches (89 mm) thick 
and properly reinforced, the surface of which is 
troweled to a smooth finish and sloped from each 
side inward to a drainage system inlet. 

The drainage system inlet shall consist of a four 
(4) inch (102 mm), self-closing foot operated hatch of 
approved material with cover milled to fit tight. The 
hatch body shall be set in the concrete of the slab 
with the lip of the opening flush with its surface to 
facilitate the cleansing of the slab with water. The 
hatch shall be properly connected to a drainage 
system inlet which shall discharge to an approved 
sanitary sewage disposal facility. 

E 82 Where the recreational vehicle park is 
provided with a piped water supply system, means 
for flushing the recreational vehicle holding tank and 
the sanitary disposal station slab shall be provided 
and shall consist of a piped supply of water under 



pressure, terminating in an outlet located and 
installed so as to prevent damage by automobiles or 
recreational vehicles. The flushing device shall 
consist of a properly supported riser terminating at 
least two (2) feet (610 mm) above the ground surface, 
with a three-fourth (3/4) inch (19.1 mm) valved 
outlet adaptable for a flexible hose. 

The water supply to the flushing device shall be 
protected from backflow by means of a listed 
vacuum breaker or backflow prevention device 
located downstream from the last shutof f valve. 

Adjacent to the flushing arrangement there shall 
be posted a sign of durable material, not less than 
two (2) feet by two (2) feet (610 mm x 610 mm) in 
size, and inscribed thereon in clearly legible letters 
shall be: 

DANGER - NOT TO BE USED FOR 
DRINKING OR DOMESTIC PURPOSES 



PartL 

Recreational Vehicle Park Water Supply Stations 

E 83 A potable watering station, if provided, for 
filling recreational vehicles potable water tanks, shall 
be located at least fifty (50) feet (15240 mm) from a 
sanitary disposal station. When such is provided, 
adjacent to the potable water outlet, there shall be 
posted a sign of durable material, not less than two 
(2) feet by two (2) feet (610 mm by 610 mm) in size, 
and inscribed thereon in clear legible letters on a 
contrasting background shall be: "POTABLE 
WATER. NOT TO BE USED FOR FLUSHING 
WASTE TANKS." The potable water shall be 
protected from backflow by means of a listed 
vacuum breaker located downstream from the last 
shutoff valve. 



PartM 

Recreational Vehicle Park Fuel Gas Equipment 
and Installations 

E 84 All fuel gas equipment and installations shall 
comply with Part D of this appendix, except as 
otherwise permitted or required by this Code. 



204 



APPENDIX G 



GRAYWATER SYSTEMS FOR SINGLE FAMILY DWELLINGS 



G 1 Graywater Systems - General 

(a) The provisions of this appendix shall apply to 
the construction, alteration, and repair of graywater 
systems for underground landscape irrigation. 
Installations shall be allowed only in single family 
dwellings. The system shall have no connection to 
any potable water system and shall not result in any 
surfacing of the graywater. Except as otherwise 
provided for in this appendix, the provisions of this 
Code shall be applicable to graywater installation. 

(b) The type of system shall be determined on the 
basis of location, soil type, and groundwater level, 
and shall be designed to accept all graywater 
connected to the system from the residential 
building. The system, except as otherwise approved, 
shall consist of a holding tank or tanks which 
discharge into subsurface irrigation /disposal fields. 

(c) No graywater system, or part thereof, shall be 
located on any lot other than the lot which is the site 
of the building or structure which discharges the 
graywater; nor shall any graywater system or part 
thereof be located at any point having less than the 
minimum distances indicated in Table G-l. 

(d) No permit for any graywater system shall be 
issued until a plot plan with appropriate data 
satisfactory to the Administrative Authority has been 
submitted and approved. When there is insufficient 
lot area or inappropriate soil conditions for adequate 
absorption of the graywater, as determined by the 
Administrative Authority, no graywater system shall 
be permitted. 

(e) No permit shall be issued for a graywater 
system on any property in a geologically sensitive 
area, as determined by the Administrative Authority. 

(f) Private sewage disposal systems existing or to 
be constructed on the premises shall comply with 
Appendix K of this Code. In addition, appropriate 
clearances from the graywater systems shall be 
maintained as provided in Table G-l. The capacity of 
the private sewage disposal system, including 
required future areas, shall not be decreased or 
otherwise affected by the existence or proposed 
installation of a graywater system servicing the 
premises. 



showers, bathroom wash basins, and water from 
ciotheswashing machines and laundry tubs. It shall 
not include waste water from kitchen sinks or 
dishwashers. 

G 3 Permit 

It shall be unlawful for any person to construct, 
install, or alter, or cause to be constructed, installed, 
or altered any graywater system in a building or on a 
premises without first obtaining a permit to do such 
work from the Administrative Authority. 

G 4 Drawings and Specifications 

The Administrative Authority may require any or all 
of the following information to be included with or 
in the plot plan before a permit is issued for a 
graywater system or at any time during the 
construction thereof: 

(a) Plot plan drawn to scale completely dimensioned, 
showing lot lines and structures, direction and 
approximate slope of surface, location of all present or 
proposed retaining walls, drainage channels, water 
supply lines, wells, paved areas and structures on the 
plot, number of bedrooms and plumbing fixtures in 
each structure, location of private sewage disposal 
system and 100% expansion area or building sewer 
connecting to the public sewer, and location of the 
proposed graywater system. 

(b) Details of construction necessary to assure 
compliance with the requirements of this appendix, 
together with a full description of the complete 
installation, including installation methods, 
construction and materials as required by the 
Administrative Authority. 

(c) A log of soil formations and groundwater level 
as determined by test holes dug in close proximity to 
any proposed irrigation area, together with a 
statement of water absorption characteristics of the 
soil at the proposed site as determined by approved 
percolation tests. 

Exception: The Administrative Authority may 
allow the use of Table G-2 in lieu of percolation 
tests. 



G 2 Definition 

Graywater is untreated household waste water 
which has not come into contact with toilet waste. 
Graywater includes used water from bathtubs, 



G 5 Inspection and Testing 

(a) Inspection 

(1) All applicable provisions of this Appendix 



205 



Appendix G 



UNIFORM PLUMBING CODE 



and of Section 103.5 of this Code shall be 
complied with. 

(2) System components shall be properly 
identified as to manufacturer. 

(3) Holding tanks shall be installed on dry, 
level well-compacted soil, if underground, or on 
a level, three (3) inch (76 mm) concrete slab, if 
above ground. 

(4) Holding tanks shall be anchored against 
overturning. 

(5) If a design is predicated on soil tests, the 
irrigation /disposal field shall be installed at the 
same location and depth as the tested area. 

(6) Installation shall conform with the 
equipment and installation methods identified 
in the approved plans. 

(b) Testing 

(1) Holding tanks shall be filled with water to 
the overflow line prior to and during inspection. 
All seams and joints shall be left exposed and 
the tank shall remain watertight. 

(2) A flow test shall be performed through the 
system to the point of graywater 
irrigation /disposal. All lines and components 
shall be watertight. 

G 6 Procedure for Estimating Graywater 
Discharge 

(a) The number of occupants of each dwelling unit 
shall be calculated as follows: 

First bedroom occupants 2 

Each additional bedroom occupant 1 

(b) The estimated graywater flows for each 
occupant shall be calculated as follows: 

Showers, bathtubs, 25 GPD (95 LPD)/occupant 
and wash basins 

Laundry 1 5 GPD (57 LPD)/occupant 

(c) The total number of occupants shall be 
multiplied by the applicable estimated graywater 
discharge as provided above, and the type of fixtures 
connected to the graywater system. 

Example 1 : 

Single family dwelling, 3 bedrooms with 
showers, bathtubs, wash basins and laundry 
facilities all connected to the graywater system: 

Total number of occupants = 2 + 1+1=4 
Estimated graywater flow = 4 x (25 + 1 5) = 1 60 GPD 
(metric) = 4 x (95 + 57) = 608 LPD 



Example 2: 

Single family dwelling, 4 bedrooms with only the 
clotheswasher connected to the graywater 
system: 

Total number of occupants = 2 + 1+1+1=5 

Estimated graywater flow = 5 x 15 = 75 GPD 

(metric) = 5 x 57 = 285 LPD 

G7 Required Area of Subsurface Irrigation/ 
Disposal Fields (See Figure G-5.) 

Each valved zone shall have a minimum effective 
irrigation area in square feet as determined by Table 
G-2 for the type of soil found in the excavation, 
based upon a calculation of estimated graywater 
discharge pursuant to Section G 6 of this appendix, 
or the size of the holding tank, whichever is larger. 
The area of the irrigation /disposal field shall be 
equal to the aggregate length of the perforated pipe 
sections within the valved zone times the width of 
the proposed irrigation/disposal field. Each 
proposed graywater system shall include at least 
three (3) valved zones and each zone shall be in 
compliance with the provisions of the section. No 
excavation for an irrigation /disposal field shall 
extend within five (5) vertical feet of highest known 
seasonal groundwater, nor to a depth where 
graywater may contaminate the groundwater or 
ocean water. The applicant shall supply evidence of 
groundwater depth to the satisfaction of the 
Administrative Authority. 

G 8 Determination of Maximum Absorption 
Capacity 

(a) Wherever practicable, irrigation /disposal field 
size shall be computed from Table G-2. 

(b) In order to determine the absorption quantities 
of questionable soils other than those listed in Table 
G-2, the proposed site may be subjected to 
percolation tests acceptable to the Administrative 
Authority. 

(c) When a percolation test is required, no 
graywater system shall be permitted if the test shows 
the absorption capacity of the soil is less than eighty- 
three hundredths (0.83) gallons per square foot (33.8 
L/m 2 ) or more than five and twelve hundredths 
(5.12) gallons per square foot (208.5 L/m 2 ) of 
leaching area per twenty-four (24) hours. 

G 9 Holding Tank Construction (See Figures G-l, 

G-2,G-3andG-4.) 

(a) Plans for all holding tanks shall be submitted to 

the Administrative Authority for approval. Such 



206 



GRAYWATER SYSTEMS 



Appendix G 



plans shall show all dimensions, structural 
calculations, bracings, and such other pertinent data 
as may be required. A minimum capacity of fifty (50) 
gallons (189 L) is required. 

(b) Holding tanks shall be constructed of solid 
durable materials, not subject to excessive corrosion 
or decay, and shall be watertight. 

(c) Each holding tank shall be vented as required by 
Chapter 9 of this Code and shall have a locking, 
gasketed access opening, or approved equivalent, to 
allow for inspection and cleaning. 

(d) Each holding tank shall have its rated capacity 
permanently marked on the unit. In addition, a sign 
"GRAYWATER IRRIGATION SYSTEM, DANGER 
— UNSAFE WATER" shall be permanently marked 
on the holding tank. 

(e) Each holding tank installed above ground shall 
have an emergency drain, separate from that 
connecting the tank with the irrigation /disposal 
fields, and an overflow drain. The emergency and 
overflow drains shall have permanent connections to 
the building drain or building sewer, upstream of 
septic tanks, if any. The overflow drain shall not be 
equipped with a shutoff valve. 

(f) The overflow and emergency drain pipes shall 
not be less in size than the inlet pipe. The vent size 
shall be determined based on the total graywater 
fixture units, as outlined in Table 7-5 of this Code. 
Unions or equally effective fittings shall be provided 
for all piping connected to the holding tank. 

(g) Each holding tank shall be structurally designed 
to withstand all anticipated earth or other loads. All 
holding tank covers shall be capable of supporting 
an earth load of not less than three hundred (300) 
pounds per square foot (1464.6 kg/m 2 ) when the 
tank is designed for underground installation. 

(h) If a holding tank is installed underground, the 
system must be designed so that the tank overflow 
will gravity drain to the existing sewer line or septic 
tank. The tank shall be protected against sewer line 
backflow by a backwater valve. 

(i) Materials 

(1) Holding tanks shall be steel, protected from 
corrosion, both externally and internally, by an 
approved coating or by other acceptable means, 
shall meet nationally recognized standards for 
the intended use, and shall be approved by the 
Administrative Authority. 

(2) Holding tanks constructed of alternate 
material may be approved by the Administrative 
Authority, provided they comply with approved 
applicable standards. 

G 10 Valves and Piping (See Figures G-l, G-2, G-3 



and G-4.) 

Graywater piping discharging into the holding tank 
or having a direct connection to the sanitary drain or 
sewer piping shall be downstream of an approved 
waterseal type trap(s). If no such trap(s) exists, an 
approved vented running trap shall be installed 
upstream of the connection to protect the building 
from any possible waste or sewer gasses. All 
graywater piping shall be marked or shall have a 
continuous tape marked with the words "DANGER 
— UNSAFE WATER." All valves, including the 
three-way valve, shall be readily accessible and shall 
be approved by the Administrative Authority. A 
backwater valve, installed pursuant to this Code, 
shall be provided on all holding tank drain 
connections to the sanitary drain or sewer piping. 

G 11 Irrigation/Disposal Field Construction (See 
Figure G-5.) 

(a) Perforated sections shall be a minimum three (3) 
inch (76 mm) diameter and shall be constructed of 
perforated high density polyethylene pipe, 
perforated ABS pipe, perforated PVC pipe, or other 
approved materials, provided that sufficient 
openings are available for distribution of the 
graywater into the trench area. Material, 
construction, and perforation of the pipe shall be in 
compliance with the appropriate absorption fields 
drainage piping standards and shall be approved by 
the Administrative Authority. 

(b) Filter material, clean stone, gravel, slag, or 
similar filter material acceptable to the 
Administrative Authority, varying in size from 
three-quarter (3/4) inch (19.1 mm) to two and one- 
half (2-1/2) inch (64 mm) shall be placed in the 
trench to the depth and grade required by this 
section. The perforated section shall be laid on the 
filter material in an approved manner. The 
perforated section shall then be covered with filter 
material to the minimum depth required by this 
section. The filter material shall then be covered with 
untreated building paper, straw, or similar porous 
material to prevent closure of voids with earth 
backfill. No earth backfill shall be placed over the 
filter material cover until after inspection and 
acceptance. 

(c) Irrigation /disposal fields shall be constructed as 
follows: 



207 



Appendix G 



UNIFORM PLUMBING CODE 



Number of drain lines per valved zone 
Length of each perforated line 
Bottom width of trench 
Spacing of lines, center-to-center 
Depth of earth cover of lines 
Depth of filter material cover of lines 
Depth of filter material beneath lines 
Grade of perforated lines 

(d) When necessary on sloping ground to prevent 
excessive line slopes, irrigation /disposal lines shall be 
stepped. The lines between each horizontal leaching 
section shall be made with approved watertight joints 
and installed on natural or unfilled ground. 

G12 Special Provisions 

(a) Other collection and distribution systems may 



Mi 


inimum Maximum 
1 - 
- 100 ft. (30840 mm) 




12 in. 


(305 mm) 18 in. (457 mm) 


4 ft. 


(1219 mm) 


10 in. 


(254 mm) - 


2 in. 


(51 mm) — 


3 in. 


(76 mm) — 


level 


3 in./1 00 ft. 2 mm/m 



be approved by the local Administrative Authority, 
as allowed by Section 301.0 of this Code. 

(b) Nothing contained in this appendix shall be 
construed to prevent the Administrative Authority 
from requiring compliance with higher requirements 
than those contained herein, where such higher 
requirements are essential to maintain a safe and 
sanitary condition. 



TABLE G-1 

Location of Graywater System 



Minimum Horizontal Distance 






Irrigation/ 


in Clear Required From: 


Holding Tank 


Disposal Field 




Feet 


(mm) 


Feet 


(mm) 


Building Structures 1 


5 2 


(1524 mm) 


2 3 


(610 mm) 


Property line adjoining private property 


5 


(1524 mm) 


5 


(1524 mm) 


Water supply wells 4 


50 


(15240 mm) 


100 


(30480 mm) 


Streams and lakes 4 


50 


(15240 mm) 


50 5 


(15240 mm) 


Sewage pits or cesspools 


5 


(1524 mm) 


5 


(1524 mm) 


Disposal field and 1 00% expansion area 


5 


(1524 mm) 


4 6 


(1219 mm) 


Septic tank 





(0) 


5 


(1524 mm) 


On-site domestic water service line 


5 


(1524 mm) 


5 


(1524 mm) 


Pressurized public water main 


10 


(3048 mm) 


10 7 


(3048 mm) 



Notes: When irrigation/disposal fields are installed in sloping ground, the minimum horizontal distance 
between any part of the distribution system and the ground surface shall be fifteen (15) feet (4572 mm). 

1 Including porches and steps, whether covered or uncovered, breezeways, roofed porte-cocheres, roofed 
patios, carports, covered walks, covered driveways and similar structures or appurtenances. 

2 The distance may be reduced to zero feet for above ground tanks when first approved by the 
Administrative Authority. 

3 Assumes a 45 degree (0.79 rad) angle from foundation. 

4 Where special hazards are involved, the distance required shall be increased as may be directed by the 
Administrative Authority. 

5 These minimum clear horizontal distances shall also apply between the irrigation/disposal field and the 
ocean mean higher high tide line. 

6 Plus two (2) feet (610 mm) for each additional foot of depth in excess of one (1) foot (305 mm) below the 
bottom of the drain line. 

7 For parallel construction/for crossings, approval by the Administrative Authority shall be required. 



208 



GRAYWATER SYSTEMS 



Appendix G 



TABLE G-2 

Design Criteria of Six Typical Soils 



Type of Soil 



Coarse sand or gravel 

Fine sand 

Sandy loam 

Sandy clay 

Clay with considerable 
sand or gravel 

Clay with small amounts of 
sand or gravel 



Minimum square feet 

of irrigation/leaching 

area per 100 gallons 

of estimated graywater 

discharge per day 

20 

25 

40 

60 



90 



120 



Maximum absorption 

capacity in gallons 

per square foot of 

irrigation/leaching area 

for a 24-hour period 

5.0 

4.0 

2.5 

1.7 

1.1 

0.8 



TABLE G-2 (Metric) 

Design Criteria of Six Typical Soils 



Type of Soil 


Minimum square meters 
of irrigation/leaching 

area per liter of 

estimated graywater 

discharge per day 


Maximum absorption 

capacity in liters 

per square meter of 

irrigation/leaching area 

for a 24-hour period 


Coarse sand or gravel 


0.005 


203.7 


Fine sand 


0.006 


162.9 


Sandy loam 


0.010 


101.8 


Sandy clay 


0.015 


69.2 


Clay with considerable 
sand or gravel 


0.022 


44.8 


Clay with small amounts of 
sand or gravel 0.030 


32.6 



209 



Appendix G 



UNIFORM PLUMBING CODE 



Vent shall be within 
trap arm distance of 
running trap. 



Screened Vents 
3/32 w (2.4mm)mesh 



Union or equal (typ.) 
Locking Cover (access) 




Approved Watertight Tank 
Fullway Valve 



1/47foot(20mm/m) 

To building drain or sewer, 
upstream of septic tank, if any 



To irrigation system 
(level or sloped) 
Minimum of 3 irrigation lines 
required for each system. 



Cleanout 



3 "(76 mm) Concrete Pad 
if tank above ground 



Figure G-1 

Graywater System Tank - Gravity 



210 



GRAYWATER SYSTEMS 



Appendix G 



Vent shall be within 
trap arm distance of 
running trap. 



Screened Vents 
3/32 M (2.4mm)mesh 



Union or equal (typ.) 

/ Backwater Valve 

/ with unions 



1/4 "/foot 
(20 mm/m 



Locking Cover 
(access) 




1/47foot(20mm/m) 

To building drain or sewer, 
upstream of septic tank, if any 



To irrigation system 
(level or sloped) 
Minimum of 3 irrigation lines 
required for each system. 



Sewage Ejector 
with probes 



Cleanout 3 " (76 mm) Concrete Pad 
if tank above ground 



Figure G-2 

Graywater System Tank - Pumped 



211 



Appendix G 



UNIFORM PLUMBING CODE 



Vent shall be within 
trap arm distance of 
running trap. 



Graywater Source 



1/47foot 
(20 mm/m) 




Screened Vents 
3/32* (2.4 mm) mesh 



Vent Thru Roof or 10' 
(3.0 m) above grade 
(support required) 



6 "(152 mm) above top 
of highest tank 



3-Way Valve 



Inlet 



i=t*3 



Vented Running Trap, 
if required 



San Tees 



Wye & 1/8 Bend, 
Backwater Valve 



Overflow 
(no valve) [ 




Capped Inlet 



Full way 

Valve 

V 



Graywater 
Irrigation System 



Overflow 
(no valve) 



Graywater 
Irrigation System 



Locking Cover 
(access) 

Approved 
Watertight Tank 



Fullway Valve 




Emergency Drain 
) (normally closed) 



1/47foot(20mm/m) 

To building drain or sewer, 
upstream of septic tank, if any 



To irrigation system 
(level or sloped) 
Minimum of 3 irrigation lines 
required for each system. 



Cleanout 



Figure G-3 

Graywater System Multiple Tank Installation 



212 



GRAYWATER SYSTEMS 



Appendix G 



Vent shall be within 
trap arm distance of 
running trap. 



Screened Vents 
3/32 "(2.4 mm) mesh 



Union or equal (typ.) 



Backwater Valve 
with unions 




Shutoff Valve 



Wye & 1/8 Bend 
Backwater Valve \ 

1/47foot(20mm/m) Cleanout 

To building drain or sewer, 
upstream of septic tank, if any 



To irrigation system 
(level or sloped) 
Minimum of 3 irri- 
gation lines required 
for each system. 



Locking Cover (access) 



Capped Emergency Drain 



Watertight Tank 
approved for 
underground use 



Sewage Ejector 
pump with probes 



Graywater Irrigation System 

Danger 

Unsafe Water 



Figure G-4 

Graywater System Underground Tank - Pumped 



213 



Appendix G 



UNIFORM PLUMBING CODE 



To public 
sewer 



2 '(0.6 m) min. 



3 "(76.2 mm) 
diameter (typ.) 




Property Line 



Valved Zone 

100 '(30.4 m) 

max. 



Note: Each valved zone shall have a minimum effective 
absorption/irrigation area in square feet predicated on the 
estimated graywater discharge in gallons per day and on 
the type of soil found in the area. The area of the field 
shall be equal to the aggregate length of perforated pipe 
sections within the valved zone times the width of the 
proposed field. 



t t *m 7 

| 10" (0.3 m) ^ r 



18"(0.5m) 1 
min. 1— 



i 



2 "(50.8 mm ) 



Soil 



Gravel 




Untreated 
building paper 



3" (76.2 mm) M^lgi^^Sy 

3 "(76.2 mm) perforated pipe section 



Figure G-5 

Graywater System Typical Irrigation Layout 



214 



APPENDIX H 



RECOMMENDED PROCEDURES FOR DESIGN, CONSTRUCTION 
AND INSTALLATION OF COMMERCIAL KITCHEN GREASE INTERCEPTORS 



H 101.0 General 

The provisions of this appendix shall apply to the 
design, construction, installation, and testing of 
commercial kitchen grease interceptors. 

H 102.0 Waste Discharge Requirements 

H 102.1 Waste discharge from fixtures and 
equipment in establishments which may contain 
grease, including but not limited to, scullery sinks, 
pot and pan sinks, dishwashing machines, soup 
kettles and floor drains located in areas where 
grease-containing materials may exist, may be 
drained into the sanitary waste through the 
interceptor when approved by the Administrative 
Authority. 

H 102.2 Toilets, urinals, and other similar fixtures 
shall not drain through the interceptor. 

H 102.3 All waste shall enter the interceptor 
through the inlet pipe only. 

H 103.0 Design 

H 103.1 Interceptors shall be constructed in 
accordance with the design approved by the 
Administrative Authority and shall have a minimum 
of two compartments with fittings designed for 
grease retention. 

H 103.2 There shall be an adequate number of 
manholes to provide access for cleaning all areas of 
an interceptor; a minimum of one (1) per ten (10) feet 
(3048 mm) of interceptor length. Manhole covers 
shall be gas tight in construction having a minimum 
opening dimension of twenty (20) inches (508 mm). 

H 103.3 In areas where traffic may exist the 
interceptor shall be designed to have adequate 
reinforcement and cover. 

H 104.0 Location 

H 1 04.1 Each grease interceptor shall be so installed 
and connected that it shall be at all times easily 
accessible for inspection, cleaning, and removal of 
the intercepted grease. A grease interceptor may not 
be installed in any part of a building where food is 
handled. Location of the grease interceptor shall 
meet the approval of the Administrative Authority. 

H 1 04.2 Interceptors shall be placed as close as 
practical to the fixtures it serves. 



H 104.3 Each business establishment for which a 
grease interceptor is required shall have an 
interceptor which shall serve only that establishment. 

H 105.0 Construction Requirements 

H 105.1.0 Purpose. Grease interceptors shall be 
designed to remove grease from effluent, and shall 
be sized in accordance with this appendix. Grease 
interceptors shall also be designed to retain grease 
until accumulations can be removed by pumping the 
interceptor. It is recommended that a sample box be 
located at the outlet end of all grease interceptors so 
that the Administrative Authority can periodically 
sample effluent quality. 

H 105.2.0 Dimension and Tolerance 
Requirements. Drawings shall be complete and 
shall show all dimensions, capacities, reinforcing and 
structural design calculations. 

H 105.2.2 Grease interceptors shall have two (2) 
compartments. The inlet compartment shall be two- 
thirds (2/3) of the total capacity of the interceptor, 
shall have a minimum liquid volume of three 
hundred thirty three (333) gallons (1260 L) and in all 
cases shall be longer than the maximum inside width 
of the interceptor. The outlet compartment shall have 
a minimum capacity of one-third (1/3) of the total 
interceptor capacity. The liquid depth shall not be 
less than two feet six inches (2' 6") (362 mm) nor 
more than six feet (6') (1829 mm). 

H 105.2.3 All grease interceptors shall have at least 
one (1) square foot (0.09 m 2 ) of surface area for every 
forty-five (45) gallons (170 L) of liquid capacity. 

H 105.2.4 Access to each grease interceptor shall be 
provided by a manhole over the inlet and a manhole 
over the outlet. There shall also be an access manhole 
for each ten (10) feet (3048 mm) of length for 
interceptors over twenty (20) feet (6096 mm) long. Each 
such access opening shall have a leak-resistant closure 
(i.e., lid) that cannot slide, rotate or flip, exposing the 
opening when properly installed and which does not 
require the use of mechanical fasteners. 

Note: The intention is that a child-resistant lid be 
provided. Mechanical fasteners are 
recommended to augment the safety of and 
ensure positive closure of the lid. 

Manholes shall extend to grade, have a 
minimum size of 20" (508 mm) diameter or 20" x 20" 
square (508 mm x 508 mm), and shall have a 
gasketed cover at grade. 



215 



Appendix H 



UNIFORM PLUMBING CODE 



H 105.2.5 The inlet and outlet shall have a baffle 
tee or similar flow device with a minimum cross 
sectional area equal to the required cross sectional 
area of the inlet. Each baffle shall extend from at least 
four (4) inches (102 mm) above the liquid level to 
within at least twelve (12) inches (305 mm) of the 
inside floor of the interceptor. 

H 1 05.2.6 Adequate partitions or baffles of sound 
durable material shall be constructed between 
compartments of the grease interceptor and shall 
extend at least six (6) inches (152 mm) above the 
liquid level. Flow from inlet compartment to outlet 
compartment shall be through a quarter bend, or 
similar device equivalent in cross sectional area to 
the inlet into the interceptor, and shall extend down 
to within twelve (12) inches (305 mm) of the inside 
floor. Wooden baffles are prohibited. 

H 105.2.7 Inlet, outlet and main baffle shall have a 
free vent area equal to the required cross sectional 
area of the inlet pipe. 

H 105.2.8 The inside cover of the grease 
interceptor shall be minimum of nine (9) inches (229 
mm) above the liquid level over the entire surface 
area of the interceptor. The airspace shall have a 
minimum capacity equal to 12-1/2% of the grease 
interceptors liquid volume. 

H 105.3.0 Structural Requirements 

H 1 05.3.1 Grease interceptors shall be designed to 
withstand all anticipated loads. 

H 105.3.2 Grease intercepters and covers shall be 
designed for an earth load of not less than five 
hundred (500) pounds per square foot (24 kPa) when 
the maximum coverage does not exceed three (3) feet 
(914 mm). Each intercepter and cover shall be 
structurally designed to withstand all anticipated 
earth or other loads and to be installed level and on a 
solid bed. Wood covers are prohibited. Grease 
interceptors for installation in traffic areas shall be 
designed to withstand an AASHTO H20-44 wheel 
load, an additional three (3) foot (914 mm) earth load 
with an assumed soil weight of one hundred (100) 
pound per square foot (4.8 kPa), and thirty (30) 
pounds per square foot (1.4 kPa) fluid equivalent 
sidewall pressure. 

H 105.3.3 Independent laboratory tests and 
engineering calculations certifying the grease 
intercepter capacity and structural stability shall be 
provided. 

H 105.4.0 Material Requirements. 
H 105.4.1 Concrete. Concrete shall have a 
minimum compressive strength of four thousand 
(4000) pounds per square inch (27579 kPa), and shall 
be made with type H/V low-alkali portland cement 
conforming to ASTM C 150, including the optional 



sulfate expansion requirement (table 4). Concrete 
shall have a maximum water / cementing materials 
ratio of 6 gal.(22.7 L)/sack of cement. Complying 
with the following ASTM designations: ASTM C 260- 
86, Specification for Air Entraining Admixtures for 
Concrete; ASTM C 33-86, Specification for Concrete 
Aggregates; ASTM C 94-86, Specification for Ready 
Mix Concrete; and ASTM C 618-85, Specification for 
Fly Ash and Raw or Calcined Natural Pozzolan for 
use as a Mineral Admixture in Portland Cement 
Concrete. 

H 1 05.4.2 Walls shall have a thickness of at least 
three (3) inches (76 mm), except where engineering 
analysis and production methods can justify a lesser 
thickness. 

H 105.4.3 The minimum area of steel reinforcement 
(in both directions) of the structural elements shall be 
0.0015 times the gross cross-sectional area of the 
reinforced section, if of bars; and not less than three- 
fourths (3/4) as much if of welded wire fabric. All 
reinforcement shall be protected with a minimum of 
one (1) inch (25.4 mm) of concrete and shall comply 
with ASTM A 185-85, Specification for Steel Welded 
Wire Fabric, Plain for Concrete Reinforcement and 
ASTM A 615, Specification for Deformed and Plain 
Billet-Steel Bars for Concrete Reinforcement. Tanks 
shall be of sufficient strength to resist stresses caused 
during handling and installation without structural 
cracking. 

H 1 05.4.4 If repairs are necessary, they shall be 
carried out in accordance with the established 
practices of the manufacturer in a manner that 
insures that the repaired interceptor meets the 
requirements of this appendix. 

H 105.5.1 Steel. Steel grease interceptors shall 
comply with the requirements for steel septic tanks 
in Section 4 of PS 1. 

H 105.6.1 Fiberglass Reinforced Polyester. 
Fiberglass reinforced polyester grease interceptors 
shall comply with the requirements for fiberglass 
reinforced polyester septic tanks in Section 4 of PS 1. 
H 105.6.2 Polyethylene. Polyethylene grease 
interceptors shall comply with the requirements for 
polyethylene septic tanks in Section 4 of PS 1. 

H 105.7.0 Water Tight Testing 
H 105.7.1 Water Testing - A sampling from each 
manufacturer's production run shall be water tested. 
One sample shall be tested for each size intercepter 
manufactured. Sample intercepters shall be 
assembled per manufacturer's instructions, set level, 
and water raised to the flow-line of the outlet fitting. 

Intercepters shall show no leakage from section 
seams, pinholes, or other imperfections. Any leakage 
is cause for rejection. When leakage occurs 



216 



COMMERCIAL KITCHEN GREASE INTERCEPTORS 



Appendix H 



additional water testing shall be made from new 
samples after correcting measures in production or 
installation have been completed. Test reports shall 
show total number of intercepters tested, number 
passing, number failing, location and cause of 
leakage. When leakage occurs corrective measures 
taken shall be reported. 

H 105.8.0 Marking and Identification 

H 105.8.1 Grease interceptors shall be 
permanently and legibly marked with the following: 

(1) Manufacturer's name of trademark; 

(2) Model number; 

(3) Products listed by IAPMO that are covered 
by this appendix shall be marked with the UPC 
certification mark with registration ® to show 
compliance with this appendix; and 

(4) Any other marking required by law. 



H 106.0 Sizing Criteria 

H 106.1 Parameters. The parameters for sizing a 

grease interceptor are hydraulic loading and grease 

storage capacity, for one or more fixtures. 

H 106.2 Sizing Formula. The size of the interceptor 

shall be determined by using the method outlined in 

Table H-l. 

H 107.0 Effluent Sampling 

An effluent sampling box on grease interceptors may 
be required by the Administrative Authority. 

H 108.0 Abandoned Grease Interceptors 

Abandoned grease interceptors shall be pumped and 
filled as required for abandoned sewers and sewage 
disposal facilities in Section 722.0. 



TABLE H-1 

Sizing of Grease Interceptors 

Number of meals Waste flow retention storage _ Interceptor size 

per peak hour 1 rate 2 time 3 factor 4 (liquid capacity) 

1 . Meals Served at Peak Hour 

2. Waste Flow Rate 

a. With dishwashing machine 6 gallon (22.7 L) flow 

b. Without dishwashing machine 5 gallon (18.9 L) flow 

c. Single service kitchen 2 gallon (7.6 L) flow 

d. Food waste disposer 1 gallon (3.8 L) flow 

3. Retention Times 

Commercial kitchen waste 

Dishwasher 2.5 hours 

Single service kitchen 

Single serving 1 .5 hours 

4. Storage Factors 

Fully equipped commercial kitchen 8 hour operation: 1 

16 hour operation: 2 

24 hour operation: 3 

Single Service Kitchen 1 .5 



217 



UNIFORM PLUMBING CODE 



"> 



^ 



218 



APPENDIX I 

INSTALLATION STANDARDS 

TABLE OF CONTENTS 

Page 
IS 1-91 Non-Metallic Building Sewers 221 

IS 2-90 Tile-Lined Roman Bathtubs 227 

IS 3-93 Copper Plumbing Tube, Pipe and Fittings 233 

IS 4-96 Tile-Lined Shower Receptors (and Replacements) 241 I 

IS 5-92 ABS Building Drain, Waste, and Vent Pipe and Fittings 245 

IS 6-95 Hubless Cast Iron Sanitary and Rainwater Systems 251 I 

IS 7-90 Polyethylene (PE) Cold Water Building Supply 253 

IS 8-95 PVC Cold Water Building Supply and Yard Piping 255 | 

IS 9-95 PVC Building Drain, Waste and Vent Pipe and Fittings 265 I 

IS 10-93 Discontinued -* 

IS 11-87 ABS Sewer Pipe and Fittings 271 

IS 12-93 Polyethylene (PE) for Gas Yard Piping 275 

IS 13-91 Protectively Coated Pipe 279 

IS 15-82 Asbestos Cement Pressure Pipe for Water Service and Yard Piping 281 

IS 16-84 Low Pressure Air Test for Building Sewers 287 

IS 18-85 Extra Strength Vitrified Clay Pipe in Building Drains 293 

IS 20-96 CPVC Solvent Cemented Hot and Cold Water Distribution Systems 295 | 

IS 21-89 Welded Copper and Copper Alloy Water Tube 305 



219 



UNIFORM PLUMBING CODE 



^ 



~> 



220 



Installation Standard 

For 

NON-METALLIC BUILDING SEWERS 

IAPMOIS1-91 



Installation and material of non-metallic building 
sewer piping shall comply with this standard and the 
current edition of the Uniform Plumbing Code 
published by the International Association of 
Plumbing and Mechanical Officials. 

Note: The following sections of the Uniform 
Plumbing Code apply to non-metallic building sewer 
piping. The standard may include section numbers or 
may omit section numbers which pertain to non- 
metallic sewers. 



301.1 


Minimum Standards 


310.0 


Workmanship 


311.0 


Prohibited Fittings and Practices 


313.0 


Protection of Piping Materials and 




Structures 


315.0 


Trenching, Excavation and Backfill 


723.0 


Building Sewer Test 


103.5.3.5 


Exceptions 


705.1 


Types of Joints 


705.2 


Use of Joints 


316.2.3 


Plastic Pipe to Other Materials 


316.4 


Prohibited Joints and Connections 


317.0 


Increasers and Reducers 


Chapter 7 


Sanitary Drainage 



GENERAL REQUIREMENTS 

314.0 After inspection of the sewer pipe, carefully 

backfill the trench as 
315.0 prescribed by Sections 314.0 and 315.0 of 

the Uniform Plumbing Code. 
723.0 The same water test procedure shall apply 

to all non-metallic house sewer materials as 

required in Section 723.0 of the Uniform 

Plumbing Code. 

718.0 Before laying non-metallic sewer pipe, 
prepare the bottom trench so that the piping 
shall lay on a firm bed throughout its entire 
length as required by Section 718.0 of the 
Uniform Plumbing Code. 

ABS OR PVC-DWV PIPE 

301 .1 Minimum Standards 

ABS or PVC Schedule 40 DWV pipe for use 
in domestic sewage, excluding special 
waste shall be installed in accordance with 
IAPMO Standards IS 5 and IS 9 (latest 



edition), whichever is applicable. ABS or 
PVC Schedule 40 DWV pipe, IAPMO listed, 
may be used in sizes 2 inch (51 mm) and 
larger. 

716.0 Markings 

716.1 ABS Pipe. The pipe shall be marked on 
two sides 180° apart or spirally in letters not 
less than 3/16 inch (4.8 mm) high in a 
contrasting color spaced at intervals of not 
more than 2 feet (610 mm) and shall at least 
consist of: 

1 . Manufacturer's name or trademark; 

2. The nominal pipe size; 

3. The symbol ABS; 

4. The symbol DWV; and 

5. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

716.2 ABS Fittings. All fittings shall be marked 
on the body or hub on both sides. The 
marking shall consist of: 

1 . Manufacturer's name or trademark; 

2. The symbol ABS; and 

3. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

716.3 PVC Pipe. The pipe shall be marked on 
two sides 1 80° apart or spirally in letters not 
less than 3/16 inch (4.8 mm) high in a 
contrasting color spaced at intervals of not 
more than 2 feet (610 mm) and shall at least 
consist of: 

1 . Manufacturer's name or trademark; 

2. The nominal pipe size; 

3. The symbol PVC; 

4. The symbol DWV; and 

5. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

716.4 PVC Fittings. All fittings shall be marked 
on the body on both sides. The marking 
shall consist of: 

1 . Manufacturer's name or trademark; 



221 



IS1 



UNIFORM PLUMBING CODE 



2. The symbol PVC; and 

3. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the UPC logo to show 
compliance with this standard. 

718.0 Protection of Building Sewers 

ABS or PVC Schedule 40 pipe shall be 
installed a minimum of twelve (12) inches 
(305 mm) below the surface of the finished 
grade. Underground installation of flexible 
thermoplastic sewer pipe shall be in 
accordance with ASTM D 2321 . 

719.0 Cleanouts 

Cleanouts, extended to within twelve (12) 
inches (305 mm) of grade, shall be of 
materials listed for that use. 

PVC SEWER PIPE 

301.1 Minimum Standards 

301.1.1 Pipe 

PVC, PSM, SDR 35, ASTM D 3034-94 and 
PVC, PS-46, ASTM F 789-89 Non-Pressure 
Pipe may be used in sizes four (4) inches 
(102 mm) and larger. 

301.1.2 Fittings 

All fittings shall be PVC or other listed non- 
metallic materials having equivalent 
durability and equal or greater strengths. 

705.1 Types of Joints 

PVC sewer pipe shall be joined by listed 
compression joints or by other approved 
methods. Pipe and fitting ends shall be 
lubricated with an approved soap jelly or 
soap solution to permit easy assembly. 

705.3 Use of Joints 

PVC sewer pipe shall be installed using the 
same type of jointing throughout, except 
when connecting to existing piping, piping of 
other materials, in line repairs and 
manholes. Transition connections to other 
materials shall be made by listed adapter 
fittings or a one-piece molded rubber 
coupling with appropriate bushings for the 
respective material. 

716.0 Markings 

716.1 PSM PVC pipe shall be clearly marked as 
follows at intervals of five (5) feet (1524 m 
m) or less: 

1 . Manufacturer's name or trademark; 

2. Nominal pipe size; 



3. The PVC cell classification, for 
example12454-B; 

4. The legend 'Type PSM SDR-35 PVC 
sewer pipe"; 

5. The ASTM designation D 3034; and 

6. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

716.2 PSM PVC fittings shall be clearly marked as 
follows: 

1 . Manufacturer's name or trademark; 

2. Nominal size; 

3. The material designation "PVC"; 

4. PSM; 

5. The ASTM designation D 3034; and 

6. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

716.3 PS-46 PVC pipe shall be clearly marked as 
follows at intervals of five (5) feet (1524 m 
m) or less: 

1 . Manufacturer's name or trademark; 

2. Nominal pipe size; 

3. The PVC cell classification, for example 
12164-B; 

4. Modulus indicator, for example T-1 , T-2 
orT-3; 

5. The legend "PS-46 PVC Gravity Sewer 
Pipe"; 

6. The ASTM designation F 789; 

7. Manufacturer's code to include day, 
month, year, shift plant, and extruder of 
manufacturer; and 

8. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

716.4 PSP PVC fittings shall be clearly marked as 
follows: 

1 . Manufacturer's name or trademark; 

2. Nominal size; 

3. The material designation "PVC"; 

4. ASTM designation F 789; and 

5. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

718.0 PVC sewer pipe shall not be installed less 
than twelve (12) inches (305 mm) below the 



222 



NON-METALLIC BUILDING SEWERS 



IS1 



surface of the finished grade and closer than 
twenty-four (24) inches (610 mm) from a 
building. Underground installation of flexible 
thermoplastic sewer pipe shall be in 
accordance with ASTM D 2321 . 

719.0 Cleanouts 

Cleanouts, extended to within twelve (12) 
inches (305 mm) of grade, shall be of 
materials listed for such use. 

POLY VINYL CHLORIDE (PVC) CORRUGATED 

SEWER PIPE WITH A SMOOTH INTERIOR 

AND FITTINGS 

301.1 Minimum Standards 

301.1.1 Pipe. Corrugated PVC sewer pipe may be 
used in sizes four (4) (102 mm), six (6) (152 
mm), eight (8) (203 mm) and ten (10) (254 
mm) inch diameters and shall conform to 
ASTM F 949. 

The profile wall pipe corrugated PVC sewer 
pipe as intended for underground use in 
non-pressure applications for sanitary 
sewers, storm sewer, and perforated and 
unperforated pipes for subdrainage. 

301.1.2 Fittings shall be PVC or other fittings having 
equivalent durability or equal or greater 
strengths in accordance with ASTM F 949. 

316.1 Types and Use of Joints. Corrugated PVC 
sewer pipe shall be 

705.1 joined by Molded or Elastomeric 
Compression Joints or by other 

705.3 approved methods. Elastomeric seals 
(gaskets) shall meet the requirements of 
ASTM F 477. The lubricant used for 
assembly shall be as recommended by the 
seller and shall have no detrimental affect 
on the gasket or on the pipe and fittings. 
The PVC cement shall comply with ASTM D 
2564 and shall be used in conjunction with a 
primer in compliance with ASTM F 656. The 
solvent cement shall be used only for 
bushings in accordance with ASTM D 2855. 

716.0 Markings 

716.1 Corrugated PVC sewer pipe shall be marked 
as follows at intervals of five (5) feet (1524 
mm) or less: 

1 . Manufacturer's name or trademark; 

2. Nominal Pipe size; 

3. The ASTM designation F 949; 

4. Type of plastic "PVC" and minimum cell 
classification; 

5. Extrusion code, including date and 
location of .manufacture; and 



6. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark with registration ® to 
show compliance with this standard. 
716.2 Corrugated PVC fittings shall be clearly 

marked as follows: 

1 . Manufacturer's name or trademark; 

2. Nominal size; 

3. The ASTM designation F 949; 

4. Material designation "PVC"; and 

5. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark with registration ® to 
show compliance with this standard. 

718.0 Protection of Building Sewer. Corrugated 
PVC sewer pipe shall not be installed less 
than twelve (12) inches (305 mm) below the 
surface of the finished grade and closer than 
twenty-four (24) inches (610 mm) from a 
building. Underground installation of flexible 
thermoplastic sewer pipe shall be in 
accordance with ASTM D 2321 . 

719.0 Cleanouts. Cleanouts, extended to within 
twelve (12) inches (305 mm) of grade, shall 
be of materials listed for such use. 

ASBESTOS CEMENT SEWER PIPE 

301.1 Minimum Standards 

Asbestos cement sewer pipe shall be Type II 
only and may be used only in sizes four (4) 
inches (102 mm) and larger. Its use is 
limited to domestic sewage. 

706.0 All fittings used with asbestos cement sewer 
pipe shall be asbestos cement or other 
approved non-metallic materials having 
equivalent durability and providing fittings 
with equal or greater strengths. 

705.1 Asbestos cement sewer pipe and male end 
fittings shall be joined by means of a sleeve 
coupling and two rubber sealing rings 
suitable for the particular size of the pipe and 
fittings for which they will be used. The 
rubber sealing rings shall be positioned in 
interior grooves in the coupling. 

The assembled joint shall provide the 
necessary compression of the rubber sealing 
rings to make a watertight joint. The crush 
strength across the assembled joint shall be 
equivalent to the crush strength of the pipe 
with which it will be used. 



223 



IS1 



UNIFORM PLUMBING CODE 



705.1.1 The use of unmachined field-cut asbestos 
cement sewer pipe is permitted for 
necessary length adjustments and at points 
of connection to other piping materials. 
These adaptions shall be made with either a 
one-piece molded rubber coupling with 
appropriate bushings or listed adapter 
fittings. 

705.1.2 Approved female fittings shall be provided 
with interior grooves in the bell ends in which 
rubber sealing rings, suitable for the 
particular size of pipe with which the fittings 
will be used, are placed. The compressed 
rubber sealing ring in the joined female (bell) 
fitting end shall provide a watertight joint. 

705.1.3 Pipe and fitting ends shall be lubricated with 
an approved jelly or soap solution to permit 
easy assembly. 

705.1.4 A listed one-piece molded rubber coupling 
with appropriate bushings may be used as 
an alternate means of connecting asbestos 
cement pipe and male end fittings. 

705.1.5 Transition from asbestos cement sewer pipe 
to another material shall be made by listed 
adapter fittings, or a one-piece molded 
coupling with appropriate bushings for the 
respective material. 

716.0 Markings 

716.1 Each standard and random length of listed 
asbestos cement sewer pipe shall be 
marked with: 

1 . Manufacturer's name or trademark; 

2. Nominal size; 

3. Class; 

4. Date of manufacture; and 

5. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

716.2 Each coupling sleeve of fitting shall be 
identified by labeling or stenciling with: 

1. Nominal size; 

2. Class; and 

3. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 

718.0 No asbestos cement sewer pipe shall be 
installed less than twelve (12) inches (305 
mm) below the surface of the ground or 



closer than two (2) feet (610 mm) 
building. 



to a 



719.0 Cleanouts shall be asbestos cement or other 
approved materials of plug or cap type 
installed with rubber ring compression joints. 
Cleanouts, extended to within twelve (12) 
inches (305 mm) of the surface, shall be of 
materials approved for such use. 

CONCRETE SEWER PIPE 

301.1 Minimum Standards 
301.1.1 Pipe and Fittings 

Concrete sewer pipe may be used in sizes 
four (4) inches (102 mm) and larger. 
Concrete sewer pipe shall conform to ASTM 
C 14-80, Class 2. Transition to other types 
or sizes of pipe may be made with listed 
concrete pipe adapter fittings or listed one- 
piece molded rubber coupling with 
appropriate bushings or increasers. 

705.1 Types of Joints 

Concrete sewer pipe and fittings shall be 
joined by means of flexible rubber sealing 
rings, compressed to provide water-tight joints 
conforming to ASTM C 443, or by listed one- 
piece molded rubber couplings, or hot-poured 
joints of listed hot-pour compounds. Portland 
Cement joints are prohibited except for repairs 
or connections to existing lines constructed 
with such joints. 

Concrete sewer pipe shall be joined by 
gaskets furnished by the pipe manufacturer 
and installed according to the 
manufacturer's instructions. Approved 
lubricant shall be used when required for the 
type of joint furnished. 

705.2 Use of Joints 

Except for points of connection to existing 
piping at either end of the sewer, concrete 
sewer pipe shall be laid using the same type 
of jointing throughout. 

716.0 Markings 

716.1 Concrete sewer pipe and fittings shall be 
permanently and legibly marked with: 

1 . Manufacturer's name or trademark; 
2 Pipe class; 

3. Date of manufacture; 

4. Identification of the plant; and 

5. Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 



224 



NON-METALLIC BUILDING SEWERS 



IS1 



certification mark to show compliance 
with this standard. 

718.0 Grade, Support and Protection of 
Building Sewers 

Concrete sewer pipe shall be installed not 
less than twelve (12) inches (305 mm) 
below the ground and not closer than two 
(2) feet (610 mm) to a building. 

719.0 Cleanouts 

Cleanouts shall conform to type of jointing 
used and cleanouts extended to within 
twelve (12) inches (305 mm) of grade, shall 
be of materials listed for that use. 



718.0 No vitrified clay sewer pipe shall be installed 
less than twelve (12) inches (305 mm) 
below the surface of the ground. 

719.0 Cleanouts 

Cleanouts shall conform to the type of 
jointing used and cleanouts extended to 
within twelve (12) inches (305 mm) of grade 
shall be of materials approved for their use. 

ADOPTED: 1957 

REVISED: 1966, 1971, 1973, 1975, 1976, 1982, 

1985, 1990, 1991 



VITRIFIED CLAY PIPE 

301.1 Minimum Standards 

301.1.1 Materials. Materials shall comply with the 

appropriate standard in Table A of the UPC. 

Vitrified clay sewer pipe, extra strength only, 

may be used in sizes three (3) inches (76 

mm) and larger. 

705.1 Types of Joints 

Vitrified clay sewer pipe and fittings shall be 
joined by means of preformed flexible 
compression joints or listed one-piece 
molded rubber couplings. 

705.1.1 Except at point of connection to existing 
piping at either end of the sewer, vitrified 
clay sewer piping shall be laid using the 
same type of jointing throughout. 

705.1.2 When installing clay pipe with flexible 
compression joints, the mating surfaces 
shall be wiped clean of dirt and foreign 
matter. An approved lubricant shall be 
applied to the joint surfaces. Spigot shall 
then be seated full depth into the bell. 

705.1.3 Listed one-piece molded rubber couplings 
shall be permitted for use on vitrified clay 
pipe and fittings, sizes three (3) inches (76 
mm) through twelve (12) inches (305 mm). 

705.1.4 Transition to other types of materials or 
sizes may be made with the use of listed 
one-piece molded, rubber couplings with 
appropriate bushings or increasers. 

716.0 Markings 

716.1 Vitrified clay sewer pipe and fittings shall be 
permanently and legibly identified with: 

1 . Manufacturer's name or trademark, and 

2. Extra Strength or ES. 



225 



UNIFORM PLUMBING CODE 



~> 



226 



Installation Standard 

For 

TILE-LINED ROMAN BATH TUBS 

IAPMO IS 2-90 



(9) Wire Reinforcing 
(See back page 2e) 

Ceramic Tile Floor Set in 
Portland Cement Mortar 

Sub-Floor & Building Felt 

2x6 Floor Furring 



(10) Wall Finish 
(3) Test Required 



Finish Floor 




Wood Floor Joists - Deflection of floor system 
limited to 1/360 of the span, including live and dead 
loads, for both point and uniform loading. 



2x4 Studs 

•Top of lining must be at 
least 3" above spill-over 
point of the finished rim. 

(7) Reinforcement 

Min. 1/4" -Max. 1/2" per 
loot slope to an approved 
flanged drain 
(See exception, note 2) 

Lining shall be pitched 
1/4" per foot to weep 
holes in drain 

- Wire Reinforcing 
(See back page 2e) 



SCALE 1-1/2" = 1'-0" 



A vapor barrier consisting of at least one layer 
of 1 5 lb. type asphalt saturated felt shall be 
between wood surfaces and concrete. 



(9) Wire Reinforcing 
(See back page 2e) 



Finish Floor 

(2) Waterproof 
Membrane 
Lining ■ 

(7) Reinforcement 

(8) Concrete Shell -(-^ 

Lining shall be 
pitched not less 
than 1/4' per foot 
to weep holes in 
drain. 




(10) Wall Rnish ^ 

Top of lining must be at least 3" above - 
spill-over point of the finished rim 



Min. 1/4" - Max. 1/2" per 
foot slope to 2" approved 
flanged drain 
(See exception, Note 2) 

(5) Comers 



Approved Flange Drain 




-f Wood Sill and 

Anchor Bolt per 
JLUBC 



Building foundation 

Wire Reinforcing 
I (See back page 2e) 
I 

l 



The receptor must rest continuously on soil 
approved for building footings or be 
supported by adequate structural members. 



T 

Special approval and l 
reinforcing required if I 
fixture supports structure. I 

l 



SCALE 1-1/2- =1'-0" 



Illustrations reprinted with permission of the Ceramic Tile Institute 



227 



IS 2 



UNIFORM PLUMBING CODE 



METRIC 



(9) Wire Reinforcing 
(See back page 2e) 



Ceramic Tile Floor Set in 
Portland Cement Mortar 



(10) Wall Finish 
(3) Test Required 




Wood Floor Joists - Deflection of floor system 
limited to 1/360 of the span, including live and dead 
loads, for both point and uniform loading. 



0.6 x 1.2 m Studs 

Top of lining must be at 
least 76 mm above spill- 
over point of the finished 
nm 

(7) Reinforcement 

Min. 20.8 mm/m - Max. 
41 .7 mm/m slope to an 
approved flanged drain 
(See exception, note 2) 

Lining shall be pitched 
20 8 mm/m to weep 
holes in drain 

- Wire Reinforcing 
(See back page 2e) 



SCALE 1 .5 mm = 1 mm 



A vapor barrier consisting of at least one layer 
of 6.8 kg type asphalt saturated felt shall be 
between wood surfaces and concrete. 



(9) Wire Reinforcing 
(See back page 2e) 



(10) Wall Finish > 

Top of lining must be at least 76 mm — 
above spill-over point of the finished rim 



Finish Floor 



(2) Waterproof 
Membrane 

Lining " ■ 

(7) Reinforcement 



(8) Concrete Shell- — 



;v~ 



£V 



(3) Water 
Test 

Required 



Min. 20.8 mm/m - Max. 41.7 
mm/m slope to 50.8 mm/m 
approved flanged drain 
(See exception, Note 2) 



iS 



Lining shall be 
pitched not less ^ ' 
than 20.8 mm/m to to o 
weep holes in 
drain. 




Approved Range Drain 



The receptor must rest continuously on soil 
approved for building footings or be 
supported by adequate structural members. 



-4 Wood Sill and 

I Anchor Bolt per 
-LUBC 



j- Building foundation 

t" Wire Reinforcing 
I (See back page 2e) 



1 
Special approval and > 
reinforcing required if I 
fixture supports structure. I 



SCALE 1.5 mm = 1 mm 



Illustrations reprinted with permission of the Ceramic Tile Institute 



228 



TILE-LINED ROMAN BATH TUBS 



IS 2 



1 . General 

a. Inspection of Work - All surfaces prepared by 
others shall be inspected by the tile installer 
before starting tile work and all 
unsatisfactory conditions reported to the 
Administrative Authority. Starting tile work by the 
tile installer shall be considered as 
acceptance of surfaces prepared by others. 

b. Surfaces - All surfaces to receive tile work shall 
be clean, structurally sound, and conform in 
every way to the local Building Code. 

(Note: No tile work shall proceed until the pan 
and drain construction has been inspected and 
approved by the Administrative Authority, where 
required.) 

2. Materials 

a. Tile Quality and Grade - Tile shall comply with 
American National Standard Specification for 
Ceramic Tile, A137.1 (equivalent to and 
incorporating U.S. Dept. of Commerce Simplified 
Practice Recommendation, R61-61 and Federal 
Specification SS-T-308b, Tile, Floor, Wall, and 
Trim Units, Ceramic). 

b. Cement - Cement shall be portland cement type 
I or type II, conforming to ASTM C-150. 

c. Sand - Sand shall be damp, clean and graded 
ASTMC-144. 

d. Water - Water shall be potable. 

e. Reinforcing shall be 3 inch x 3 inch (76 mm x 
76 mm), 13 x 13 gage or 1-1/2 x 2 (38 mm x 51 
mm) mesh, 16x13 gage steel wire, conforming 
toASTMA82andA185. 

f. Asphalt shall conform to Federal Specification 
SS-A-0666, Type Z, Grade 2, Class A. 

g. Plastic Roof Cement shall conform to Federal 
Specification SS-C1 53. 

h. Waterproof Felt Membrane - The waterproof 
felt membrane shall be at least 15 lb. (6.8 kg) 
asphalt saturated felt, conforming to Type I, 
Federal Specification HH-F-191 (a). 

i. Plastic Membrane shall comply with applicable 
standards listed in Table 14-1 of the UPC. 

j. Other Membranes - Where the Administrative 
Authority approves their use, non-metallic sub- 
pans or linings of lead sheets weighing not less 
than 4 lbs. per sq. foot (191.5 Pa) and copper 
pans of at least No. 24 B & S gage may be used. 

k. Waterproofing Admixture - The mortar bed of 
the receptor shall be mixed with a waterproof 
admixture, approved by the Administrative 
Authority in the amounts allowed by such 
approval. 



Currently Approved Mortar Additives 

Anti-Hydro - 1 qt. (0.95 I) per sack of cement 

Plastiment - 1 lb. (0.5 kg) of powder per sack of 

cement 

Plastiment - 2 oz. (56.7 g) of fluid per sack of 

cement 

Sika 3A - 1 qt. (0.95 I) per sack of cement 

Suconem (Red Label) - 1 pint (0.47 I) per sack 

of cement 

3. Installation 

a. Drains - An approved type drain with sub-drain 
shall be installed with every such shower 
membrane. Flange of each sub-drain shall be 
accurately set exactly level with sloping sub-floor 
and shall be equipped with a clamping ring or 
other approved device to make a tight 
connection between the membrane and the sub- 
drain. The sub-drain shall have weep holes into 
the waste line. The drain shall be of such design 
that there will be not less than 2 inch (51 mm) 
depth from the top of the sub-drain flange to top 
of the strainer. A ring of absorbent material must 
be placed around the weep holes to keep them 
open when the finish materials are installed. 

b. Sloping Sub-Floor and Membrane - All lining 
materials shall be pitched not less than one 
quarter (1/4) inch per foot (20.8 mm/m) to weep 
holes in the sub-drain by means of a smooth and 
solidly formed sloping sub-base. All such lining 
materials shall extend upward on the side walls 
of the tub to a point not less than four (4) inches 
(102 mm) above the top of the finished dam or 
threshold and shall extend outward over the top 
of the rough threshold and be turned over and 
fastened on the outside face of the rough 
threshold. All ledge tops within four (4) inches 
(102 mm) above the rough threshold shall be 
covered with the lining material. Non-metallic 
sub-pans or linings shall be built-up on the job 
site and shall consist of not less than three (3) 
layers of standard grade fifteen (15) pound (6.8 
kg) asphalt impregnated roofing felt. The bottom 
layer shall be mopped to the formed sub-base 
with hot asphalt and each succeeding layer 
thoroughly hot-mopped to that below, on the 
basis of twenty (20) pounds (9.1 kg) of asphalt 
per layer per square. All corners shall be 
carefully fitted and shall be made strong and 
watertight by folding or lapping, and each corner 
shall be reinforced with suitable woven glass 
fiber webbing hot-mopped in place. All folds, 
laps and reinforcing webbing shall extend at 
least four (4) inches (102 mm) in all directions 
from the corner and all glass fiber webbing shall 



229 



IS 2 



UNIFORM PLUMBING CODE 



be of approved type and mesh, producing a tear 
strength of not less than fifty (50) pounds per 
square inch (344.5 kPa) in either direction. Non- 
metallic shower sub-pans or linings may also 
consist of multi-layers of other approved 
equivalent materials suitably reinforced with 
glass fibers and having each layer carefully fitted 
and hot mopped in place on the job site as 
elsewhere required in this section, according to 
manufacturer's recommended installation 
procedures. 

Linings shall not be nailed or perforated at any 
point which will be less than one (1) inch (25.4 
mm) above the finished dam or threshold. 
Where flexible plastic sheet membranes are used, 
corners shall be carefully constructed by folding or 
bonding of pre-fabricated reinforcing corner. Joints 
in flexible plastic sheeting shall be constructed with 
the appropriate solvent bonding liquid, bodied 
solvent cement or thermal welding. 
Where lead and copper pans are used as 
membranes, the installation shall be made in 
similar manner as required for felt membranes, 
except the asphalt moppings, and, in addition, 
the pans shall be insulated from all concrete and 
mortar surfaces and from all conducting 
substances, other than their connecting drain, by 
15 lb. (6.8 kg) asphalt saturated felt or an 
approved equivalent, hot-mopped to the lead or 
copper pans. Joints in lead and copper pans 
shall not be soldered, but shall be burned or 
silver brazed, respectively. 
Tests - Upon installation, all concrete tub shells 
shall be tested for water tightness by being filled 
to the top of the rough threshold with water for 
24-hours to establish their water tightness. 
Roman Bath Tub - Floor shall be of ceramic tile 
set in portland cement mortar, mixed in the 
proportion of one (1) part portland cement to four 



(4) parts of mortar sand by volume and shall be 
provided with an approved shower drain 
designed to make a water-tight joint at the floor. 
The mortar mixture shall be of such consistency 
that a troweled surface readily assumes a 
smooth, slickened surface. All concrete mortar 
bases shall be mixed with an approved 
waterproofing admixture and properly reinforced 
with 3 inch x 3 inch (76 mm x 76 mm) mesh, 13 
x 13 gage or 1-1/2 inch x 2 inch (38 mm x 51 
mm) mesh, 16.x 13 gage cold drawn welded 
steel wire fabric located in the approximate 
center of the mortar bed and extending up the 
side walls but, in no case, less than 1 inch (25.4 
mm) above the finished threshold. Corners shall 
be lapped and the reinforcing shall extend over 
the threshold and ledges. 
The total thickness of the floor mortar shall not 
be less than 1-1/4 inch (32 mm) at any point. 
The tile floor shall have a minimum of 1/8 inch 
(3.2 mm/m) pitch and a maximum of 1/2 inch 
(12.7 mm/m) pitch toward the drain per foot. 
Bath tub walls to a minimum height to 3 inch (76 
mm) and not less than 1 inch (25.4 mm) above 
the finished dam shall be lined with ceramic tile 
set in portland cement mortar, mixed with an 
approved waterproofing admixture. 
All wood framed bases shall be designed 
with a maximum deflection of 1/240 of the 
span, including live and dead loads. 



Ceramic Tile 
Bond Coat 
Mortar Bed 
Scratch Coat 
Metal Lath 

Waterproof Membrane 
Exterior Grade Plywood 




WOOD FORM 



230 



TILE-LINED ROMAN BATH TUBS 



IS 2 



(1 ) Note: two stages of construction are covered 
- the reinforced concrete shell and the wire 
reinforced tile lining over the water-proof 
membrane. 

(2) Approved waterproofing membrane, mortar 
bed and finish construction shall conform to 
the general requirements of the Uniform 
Plumbing Code. Exception: In short 
sections where there is no foot traffic, the 
finished floor may exceed 1/2 inch per foot 
(12.7 mm/m) slope. 

(3) Each concrete shell shall be filled to its 
overflow rim with water and shall remain 
watertight for not less than twenty-four (24) 
hours before inspection and before the finish 
surface is installed. 

(4) The finish surface shall be ceramic tile 
installed with portland cement mortar 
mixed to a proper consistency in the 
proportion of one (1) part cement and four 
(4) parts mortar sand by volume and having 
an approved waterproofing admixture* 
included. Ceramic tile joints shall be 
thoroughly grouted with approved water- 
proofing grout containing an admixture. 

(5) The concave interior surfaces shall be such 
as to permit ready cleansing and all corners 
shall be rounded or at angles not in excess 
of 45°. Grout is not acceptable for rounding 
corners. See details below on approved 
corners. 

(6) Concealed overflow or built-in waste stopper 
may be used if designed and approved for 
this application. 

(7) Reinforcement in center of pour, use #30 @ 
8 inch (203 mm) O.C. both ways. 

(8) 2000 P.S.I. (13,780 kPa) compressive 
strength concrete poured monolithically and 
having an approved waterproofing admixture 
included*. Concrete to have not less than 
six (6) sacks of portland cement per batch. 

(9) Reinforcing wire, as specified under 
materials in this standard or equal, shall be 
wired together in a self-supporting manner. 
Nails shall not be used through the 
waterproofing membrane to fasten wire 
reinforcing. 

*Quantities of several approved 

waterproofing admixtures required per sack 

of cement: 

Anti-Hydro - 1 qt. (0.95 I) per sack of 

cement 

Plastiment - 1 lb. (0.5 kg) of powder per 

sack of cement 

Plastiment - 2 oz. (56.7 g) of fluid per sack 

of cement 



A*- 



Sika 3A - 1 qt. (0.95 I) per sack of cement 
Suconem (Red Label) - 1 pint (0.47 I) per 
sack of cement 



Ar 




Approved Corners Under 
Uniform Plumbing Code 



3L 



> 



%. 






3- 



^ 



^ 



^>. 



DC 



^ 



ADOPTED: 1966 

REVISED: 1977,1982,1990 



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5- 



231 



UNIFORM PLUMBING CODE 



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232 



Installation Standard 

For 

COPPER PLUMBING TUBE, PIPE AND FITTINGS 

IAPMO IS 3-93 



Installation and material of copper tube, pipe and 
fittings in drainage, vent, and water systems shall 
comply with this standard and the current edition of 
the Uniform Plumbing Code, published by the 
International Association of Plumbing and 
Mechanical Officials (IAPMO). 

Note: The following sections of the Uniform 
Plumbing Code shall apply. 

Table 14-1 Standards 

ASTMB 42-93 Specification for Seamless 

Copper Pipe, Standard Sizes 
ASTMB 75-93 Specification for Seamless 

Copper Tubes 
ASTMB 88-93a Specification for Seamless 

Copper Water Tube 
ASTMB 302-92 Specification for Threadless 

Copper Pipe 
ASTM B 306-92 Specification for Copper Drainage 

Tube (DWV) 
ASTM B828-92e1 Standard Practice for Making 

Capillary Joints by Soldering of 

Copper and Copper Alloy Tube 

and Fittings 
ANSI B 16.18-84 Cast Copper Alloy Solder-Joint 

Pressure Fittings 
ANSI B 16.22-95 Wrought Copper and Copper Alloy 

Solder-Joint Pressure Fittings 
ANSI B 16.23-92 Cast Bronze Solder-Joint 

Drainage Fittings - DWV 
ANSI B 16.29-86 Wrought Copper and Copper Alloy 

Solder-Joint Drainage Fittings 

301.1 Minimum standards 

903.2 Use of copper tubing 

701 .1 .4 Underground drainage and vent piping 

701 .1 .5 Above ground drainage and vent piping 

81 1 .1 Chemical or industrial waste piping 

604.2 Water piping 

604.3 Marking of tubing 

604.4 Flexible Water Connectors 
704.4.1 Closet Flanges 

707.1 Cleanouts 

310.0 Workmanship 

31 1 .0 Prohibited fittings and practices 

313.0 Protection of piping materials and 

structures 
314.0 Hangers and supports, horizontal and 

vertical piping 
103.5.3 Test 



701.0 Materials, drainage piping 

903.0 Materials, vent piping 

316.1 Types of Joints 

316.1.2 Wiped Joints 

316.1.3 Solder and sweat 
606.1.1 Flared Joints 

606.2.1 Use of joints, copper water tube 

316.2 Special Joints 

31 6.2.1 Copper tubing to screw pipe joints 

705.4.3 Ground Joint, Flared or Ferrule 
Connections 

31 6.4 Prohibited joints and connections 

31 7.0 Increasers and reducers 

604.0 Materials 

604.1 Water piping 

604.7 Restriction of Used Piping 

608.0 Relief Valve Drain 

609.0 Installation, Inspection, Testing 

610.0 Size of potable piping 

Appendix A Chart A-4 Friction loss per 1 00 ft. (30.5 m) 
Appendix D D 1 .0 Materials, rain water piping 
D 2.0 Materials, roof drains 

301.1 Minimum Standards 

301.1.1 Materials. Materials shall comply with the 
appropriate standard in Table 14-1 of the 
UPC. 

Note: The nominal or standard size of 
copper plumbing tube is always 0. 125 inch 
(3.8 mm) or one-eighth (1/8) inch (3.2 
mm) smaller than the actual outside 
diameter dimension of the tube. For 
example, 3 Inch (76 mm) nominal size 
copper plumbing tube measures 3- 1/8 
inch (79 mm) O.D., 1/2 inch (12.7 mm) 
nominal size copper plumbing tube 
measures 5/8 inch (15.9 mm) O.D., etc. 

301.1.2 Markings. Markings shall be visible for 
inspection. Products listed by IAPMO that 
are covered by this standard shall be 
labeled with the UPC certification mark. 

301.1.2.1 Tube and Threadless Pipe. 

Water tube (Types K, L, M), drainage tube 
(Type DWV), and threadless pipe (TP), 
shall bear the following incised marking at 
not over 18 inch (457 mm) intervals: 

(a) Manufacturer's name or trademark; 

(b) Tube type; and 

(c) Country of origin. 



233 



IS 3 



UNIFORM PLUMBING CODE 



301 .1 .2.2 Pipe (Copper and Copper Alloy) 

Pipe shall bear the following incised 
marking at not over 18 inch (457 mm) 
intervals: 

(a) Manufacturer's name or trademark; 
and 

(b) Pipe type. 

301.1.2.3 Fittings 

Fittings shall bear the following markings: 

(a) Manufacturer's name or trademark, 
and 

(b) "DWV" on drainage fittings. 

316.1 Type of Joints 

31 6.1 .1 General Information 

Copper tube and fittings may be joined in 
a number of ways, depending on the 
purpose of the system. Soldering and 
brazing with capillary fittings are the 
methods used most. 

The American Welding Society defines 
soldering as a joining process which takes 
place below 840°F (449°C) and brazing as 
a similar process which occurs above 
840°F (449°C) but below the melting point 
of the base metals. In actual practice for 
copper systems, most soldering is done at 
temperatures from about 350°F (177°C) to 
550°F (288°C), while most brazing is done 
at temperatures ranging from 1100°F 
(593°C) to 1500°F (816°C) . The choice 
between soldering or brazing will generally 
depend on operating conditions. Solder 
joints are generally used where the service 
temperature does not exceed 205°F 
(96°C), while brazed joints can be used 
where greater strength is required, or 
where system temperatures are as high as 
400°F (204°C) . 

Mechanical joints are used frequently for 
underground tubing, for joints where the 
use of heat is impractical and for joints 
that may have to be disconnected from 
time to time. 
316.1.1.1 Fittings for Soldered, Brazed, and 
Flared Joints 

Fittings are available in all standard tube 
sizes and in a wide variety of types to 
cover needs for plumbing. They can be 
either soldered or brazed, although 
brazing cast fittings requires care. 
Wrought copper pressure fittings are also 
available over a wide range of sizes and 
types. These, too, can be joined by either 
soldering or brazing and wrought fittings 
are preferred where brazing is the joining 
method. Otherwise, the choice between 



cast and wrought fittings is largely a matter 
of the user's preference. Flared-tube 
fittings provide metal-to-metal contact 
similar to ground joint unions; both can be 
easily taken apart and reassembled. They 
are especially useful where residual water 
cannot be removed from the tube and 
soldering is difficult. Flared joints may be 
required where a fire hazard exists and the 
use of a torch to make soldered or brazed 
joints is not allowed. Also, soldering under 
wet conditions can be very difficult and 
flared joints are preferred under such 
circumstances. 
316.1.1.2 Solders 

Note: Users of the Uniform Plumbing 
Code are reminded that provisions of the 
Federal Clean Drinking Water Act of 
1986, which all must obey, forbid the use 
of solder which contains in excess of 
0.2% of lead, by volume in potable water 
systems. The provisions of the act are 
incorporated in all ordinances, statutes, 
state and municipal regulations by 
reference and by operation of law. 
The selection of a solder depends on the 
operating pressure and temperature of the 
line. Consideration should also be given 
to the stresses on the joint caused by 
thermal expansion and contraction. 
However, stresses due to temperature 
changes should not be significant in two 
commonly encountered cases: when tube 
lengths are short, or when expansion 
loops are used in long tube runs. 
Solder is generally used in wire form, but 
paste-type solders are also available. 
These are finely granulated solders in 
suspension in a paste flux. When using 
paste-type solders, observe these four 
rules: 

1. Wire solder must be applied in 
addition to the paste to fill the voids 
and assist in displacing the flux, 
otherwise the surfaces may be well 
"tinned" and yet there may not be a 
good joint with a continuous bond. 

2. The paste mixture must be thoroughly 
stirred if it has been standing in the 
can for more than a very short time, 
as the solder has a tendency to settle 
rapidly to the bottom. 

3. The flux cannot be depended on to 
clean the tube. Cleaning should be 
done manually as is recommended for 
any other flux and solder. 

4. Remove any excess flux. 



234 



COPPER PLUMBING TUBE, PIPE AND FITTINGS 



IS 3 



Solders are available containing small 
amounts of silver or other additives to 
impart special properties. Such solders 
may require special fluxes. The 
manufacturer's recommendations should 
be consulted regarding proper procedures 
and fluxes for such solders and about the 
expected properties. 
316.1.1.3 Soldering Flux 

The functions of the soldering flux are to 
remove residual traces of oxides, to 
promote wetting and to protect the surfaces 
to be soldered from oxidation during 
heating. The flux should be applied to clean 
surfaces and only enough should be used 
to lightly coat the areas to be joined. 
An oxide film may reform quickly on 
copper after it has been cleaned. 
Therefore, the flux should be applied as 
soon as possible after cleaning. 

CAUTION 

Careless workmanship, especially during 
flux applications, can result in corrosion of 
the tube long after the system has been 
installed. If excessive flux is used, the 
residue inside the tube can cause 
corrosion. In an extreme case, such 
residual flux can actually lead to 
perforation through the tube wall causing 
leakage. To guard against this danger, it is 
important (1) to choose a flux that is not 
too corrosive, and (2) to use only the 
minimum amount actually needed to make 
the joint. 

316.1.2 Solder Joints 

Soldering and brazing both involve basic 
steps, which must be executed with care 
and craftsmanship. The steps are: 

(1) Measuring 

(2) Cutting 

(3) Reaming 

(4) Cleaning 

(5) Fluxing 

(6) Assembly and support 

(7) Heating 

(8) Applying the filler metal 

(9) Cooling and cleaning 

Each step contributes to a strong, 
dependable joint. 
316.1.2.1 Measuring 

Measuring the length of each tube 
segment must be accurate. Inaccuracy 
can compromise joint quality. If the tube is 
too short it will not reach all the way into 



the socket of the fitting and a proper joint 
cannot be made. If the tube segment is 
too long there is a danger of cocking the 
tube in the fitting and putting strain on the 
system which could affect service life. 

316.1.2.2 Cutting 

Once the tube is measured it can be cut. 
Cutting can be accomplished in a number 
of different ways to produce a satisfactory 
square end. The tube can be cut with a 
disc-type tube cutter, a hacksaw, an 
abrasive wheel, or with a stationary or 
portable bandsaw. Care must be taken that 
the tube is not deformed while being cut. 
Regardless of the method, the cut must be 
square with the run of the tube so that the 
tube will seat properly in the fitting socket. 

316.1.2.3 Reaming 

All pipe and tube shall be reamed to the 
full I.D. of the pipe and tube. 
Tools used to ream tube ends include the 
reaming blade on the tube cutter, half- 
round or round files, a pocket knife and a 
suitable deburring tool. With annealed 
tube, care must be taken not to deform the 
tube end by applying too much pressure. 
Both the inside and the outside of the tube 
may require removal of the burr. 

316.1.2.4 Cleaning 

The removal of oxides and surfaces soil is 
crucial if filler metal is to flow properly into 
the joint. Unremoved oxide, surface soil 
and oil can interfere with the strength of 
the joint and cause failure. 
Mechanical cleaning is a simple operation. 
The end of the tube should be abraded 
lightly using sand cloth or nylon abrasive 
pads for a distance only slightly more than 
the depth of the fitting socket. The socket 
of the fitting should also be cleaned using 
sand cloth, abrasive pads, or a properly 
sized fitting brush. 

Copper is a relatively soft metal. If too 
much material is removed, a loose fit will 
result and interfere with satisfactory 
capillary action in making the joint. The 
capillary space between tube and fitting is 
approximately 0.004 inch (0.10 mm). 
Solder or brazing filler metal can fill this 
gap by capillary action. This spacing is 
critical for the filler metal to flow, into the 
gap and form a strong joint. 
Surfaces once cleaned should not be 
touched with bare hands or oily gloves. 
Skin oils, lubricating oils and grease 
impair solder flow and wetting. 



235 



IS 3 



UNIFORM PLUMBING CODE 



316.1.2.5 Fluxing 

Stir the flux before use. A good flux will 
dissolve and remove traces of oxide from 
the cleaned surfaces to be joined, protect 
the cleaned surfaces from reoxidation 
during heating and promote wetting of the 
surfaces by the solder. A thin, even 
coating of flux should be applied with a 
brush to both tube and fitting. Do not apply 
with fingers. Chemicals in the flux can be 
harmful if carried to the eyes or open cuts. 

316.1.2.6 Assembly and Support 

After both tube and fitting surfaces are 
properly fluxed, they should be assembled, 
making sure the tube seats against the 
base of the fitting socket. A slight twisting 
motion ensures even distribution by the 
flux. Remove excess flux. Care must be 
taken to assure that the tube and fittings 
are properly supported with a uniform 
capillary space around the entire 
circumference of the joint. Uniformity of 
capillary space will ensure good filler metal 
penetration if the guidelines of successful 
joint making are followed. Excessive joint 
clearance can cause the filler metal to 
crack under stress or vibration. 
The joint is now ready for soldering. Joints 
prepared and ready for soldering should 
be completed the same day and not left 
unfinished overnight. 

316.1.2.7 Heating 

Because an open flame may be used for 
soldering, and because flammable gases 
are used, safety precautions must be 
observed. The heat is generally applied 
using an air/fuel torch. Such torches use 
acetylene or an LP gas. Electric 
resistance tools can also be used. 
Heating should begin with the flame 
perpendicular to the tube. The copper 
tube conducts the initial heat into the 
fitting socket for even distribution of heat 
inside and out. The extent of this 
preheating depends upon the size of the 
joint. Experience will indicate the amount 
of time needed. The flame should now be 
moved onto the fitting. Then move the 
flame from the fitting socket back onto the 
tube a distance equal to the depth of the 
fitting socket. Touch the solder to the joint. 
If the solder does not melt, remove it and 
continue the heating process. Be careful 
not to overheat or to direct the flame into 
the fitting cup. This could cause the flux to 
burn and destroy its effectiveness. When 



the melting temperature of the solder has 
been reached, heat may be applied to the 
base of the cup to aid capillary action in 
drawing the solder into the cup. 

316.1.2.8 Applying the Filler Metal 

For tube in a horizontal position, start 
applying the solder slightly off-center at 
the bottom of the joint. Proceed across the 
bottom of the fitting and up to the top 
center position. Return to the point of 
beginning, overlap the starting point, and 
then proceed up the incompleted side to 
the top, again, overlapping the solder. 
For joints in the vertical position, a similar 
sequence of overlapping passes should 
be made, starting wherever is convenient. 
Molten solder will be drawn into the joint 
by capillary action regardless of whether 
the solder is being fed upward, downward 
or horizontally. 

316.1.2.9 Cooling and Cleaning 

After the joint has been completed, natural 
cooling is best. Shock cooling with water 
may cause unnecessary stress on the 
joint and result in eventual failure. When 
cool, clean off any remaining flux with a 
wet rag. 
31 6.1 .3 Brazed Joints 

Brazing is the second most commonly 
used method for joining copper tube. 
Making brazed joints is similar to making 
soldered joints with respect to measuring, 
cutting, reaming, cleaning, assembly and 
support. And as in soldering, the brazing 
filler metal is melted by the heat of the 
tube and fitting and drawn into the joint by 
capillary action. 

The major differences between soldering 
and brazing are the: 

• Type of flux used, 

• Composition of filler metal, and 

• Amount of heat required to melt the filler 
metal. 

316.1.3.1 Brazing Flux 

The fluxes used for brazing copper joints 
are different in composition from soldering 
fluxes. The two types cannot be used 
interchangeably. Brazing fluxes are water 
based, whereas most soldering fluxes are 
petroleum based. Similar to soldering 
fluxes, brazing fluxes dissolve and remove 
residual oxide from the metal surfaces, 
protect the metal from reoxidation during 
heating and promote wetting of the 
surfaces to be joined by the brazing filler 
metal. 



236 



COPPER PLUMBING TUBE, PIPE AND FITTINGS 



IS 3 



Fluxes also provide the craftsman with an 
indication of temperature. Application of 
the flux is the same as when soldering. If 
the outside of the fitting and the heat- 
affected area of the tube are covered with 
flux (in addition to the end of the tube and 
the cup), oxidation will be prevented and 
the appearance of the joint will be greatly 
improved. 

316.1.3.2 Brazing Filler Metals 

There are two general types of brazing 
filler metal used for joining copper tube. 
Classified according to their components, 
they are: BCuP (Brazing-Copper- 
Phosphorus) and BAg (Brazing-Silver). 
BCuP filler metals are preferred for joining 
copper tube and fittings. The phosphorus 
in them acts as a fluxing agent and the 
lower percentage of silver makes them 
relatively low cost. When using copper 
tube, wrought copper fittings and BCuP 
brazing filler metal, fluxing is optional. 
However, when cast fittings are brazed, 
flux must be used. 

316.1.3.3 Heating 

Oxy/fuel torches are generally used for 
brazing because of their higher 
temperatures required. Recent innovations 
in tip design make air/fuel torches useful 
on a wider range of sizes for brazing. 
When working at brazing temperatures, 
safety precautions must be followed and 
care taken to protect both the operator 
and the materials being used. 
The heating operation is the same as for 
soldering. First preheat the tube and then 
the tube and fitting. When the filler metal 
starts to melt, apply heat at the base of 
the fitting socket to help draw the brazing 
filler metal in by capillary action. 

316.1.3.4 Applying Brazing Filler Metal 
Remember to allow the heat of the joint, 
not the flame, to melt the filler metal. The 
melted filler metal will be drawn into the 
joint by capillary action. It is very important 
that the flame be in continuous motion. It 
must not be allowed to remain on any one 
point long enough to burn through the 
tube or fitting. 

If the filler metal fails to flow, or has the 
tendency to ball-up, it indicates either that 
there is oxide on the surfaces being joined 
or that the parts to be joined are not hot 
enough. If the filler metal refuses to enter 
the joint, the fitting cup is not hot enough. 
If it tends to flow over the outside of either 



part of the joint, it indicates that part is 
overheated. When the joint is completed, 
a continuous fillet should be visible 
completely around the joint. 
Larger diameter tube is more difficult to 
heat to the desired temperature. The use of 
a heating tip or rosebud may be necessary 
to maintain the proper temperature over the 
area being brazed. Once total heat control 
is attained, follow the same procedures 
used for smaller tube. 

316.1.3.5 Cooling and Cleaning 

When the brazed joint is finished, allow it 
to cool naturally. Flux residues and some 
oxides formed by heating can be removed 
by washing with hot water and brushing 
with a stainless steel wire brush. 

606.1.1 Flared Joints 

606.1.1.1 Flared Joints with Impact Flaring Tools 
Step 1 Cut the tube to the required 

length. 

Step 2 Remove all burrs. This is very 
important to assure metal-to- 
metal contact. 

Step 3 Slip the coupling nut over the end 
of the tube. 

Step 4 Insert flaring tool into the tube 
end. 

Step 5 Drive the flaring tool by hammer 
strokes, expanding the end of the 
tube to the desired flare. This 
requires a few moderately light 
strokes. 

Step 6 Assemble the joint by placing the 
fitting squarely against the flare. 
Engage the coupling nut with the 
fitting threads. Tighten with two 
wrenches, one on the nut and 
one on the fitting. 

606.1.1.2 Flared Joints with Screw-Type Flaring 
Tools 

Steps 1-3 Same as for impact flaring 
previously described. 

Step 4 Clamp the tube in the flaring 
block so that the end of the 
tube is slightly above the face 
of the block. 

Step 5 Place the yoke of the flaring 
tool on the block so that the 
beveled end of the compressor 
cone is over the tube end. 

Step 6 Turn the compressor screw 
down firmly, forming the flare 
between the chamber in the 
flaring block and the beveled 
compressor cone. 



237 



IS 3 



UNIFORM PLUMBING CODE 



Step 7 Remove the flaring tool. The 
joint can now be assembled as 
in Step 6 for impact flaring. 

610.0 Sizing, Velocity 

Note: There are various hydraulic 
formulas for the flow of water in pipes. 
With high velocity and attendant turbulent 
flow, there can be excessive noise and 
piping wear. 

The designer should aim for maximum 
flow velocities in the range of five to eight 
feet per second to minimize noise and 
erosion problems. For the smallest tube 
sizes, the designer is wise to work at the 
bottom of this range, as a maximum, to 
guard against local high velocities 
building up due to faulty workmanship 
(e.g. burrs at tube ends which are not 
properly reamed) or unusually numerous 
changes in flow direction. 

GENERAL INFORMATION 

It is not possible to cover all the variables of a 
plumbing system; however, the following information 
may prove helpful: 

Expansion Loops - Copper tube, like all piping 
materials, expands and contracts with temperature 
changes. Therefore, in a copper tube system 
subjected to excessive temperature changes, the line 
tends to buckle or bend when it expands unless 
compensation is built into the system. Severe 
stresses on the joints may also occur. Such stresses, 
buckles, or bends are prevented by the use of 
expansion joints or by installing offsets, "U" bends, 
coil loops, or similar arrangements in the tube 
assembly. These specially shaped tube segments 
take up expansion and contraction without excessive 
stress. The expansion of a length of copper tube may 
be calculated from the formula: 

Temperature Rise (°F) x Length (feet) x 

12 (inches per foot) x 

Expansion Coefficient (in. per in. per °F) = 

Expansion (inches), or 

Temperature Rise (°C) x Length (meter) x 

1000 (mm per meter) x 

Expansion Coefficient (mm per mm per °C) = 

Expansion (mm). 

Calculations for expansion and contraction should be 
based on the average coefficient of expansion of 
copper which is 0.0000094 per °F (1.692 x 10-5 per 
°C), between 70°F (21 °C) and 212°F (100°C). For 



example, the expansion of each 100 feet (3048 mm) 
of length of any size tube heated from room 
temperature (70°F) (21 °C) to 170°F (77°C) (a 100°F 
(38°C) rise) is 1.128 inches (28.7 mm). 

100°x100ftx12in./ftx 

0.0000094 in./in./°F = 1.128 in., or 

55.6° x 30.48 m x 1000 mm/m x 1 .692 x 10-5 

mm/mm/°C = 28.7 mm 

Tube Supports 

Vertical Piping - See Section 314.0 

Horizontal Piping - See Section 314.0 

Bending 

Copper tube, properly bent, will not collapse on the 
outside of the bend and will not buckle on the inside 
of the bend. Tests demonstrate that the bursting 
strength of a bent copper tube can be greater than it 
was before bending. Because copper is readily 
formed, expansion loops and other bends necessary 
in an assembly are quickly and simply made if the 
proper method and equipment are used. Simple 
hand tools employing mandrels, dies, forms, and 
fillers, or power-operated bending machines are 
used. 

Both annealed tube and bending-temper tube can be 
bent with hand benders. The proper size bender for 
each size tube must be used. Usually the size of the 
tool corresponds to the nominal outside diameter of 
the tube, not the standard tube size. For a guide to 
the typical bend radii, see the following bending 
guide for copper tube. 



ADOPTED: 1969 

REVISED: 1973, 1975, 1987, 1989, 1993 



238 



COPPER PLUMBING TUBE, PIPE AND FITTINGS 



IS 3 



BENDING GUIDE FOR COPPER TUBE 



Tube Size, 
Inches (mm) 


Tube Type 


Temper 


Minimum 
Bend Radius, 
Inches (mm) 


Type of Bending 
Equipment 


1/4 (6.4) 


K, L 


Annealed 


3/4 


(19.1) 


Lever type 


3/8 (9.5) 


K,L 
K, L, M 


Annealed 
Drawn 


1-1/2 

3 
1-3/4 


(38) 
(76) 
(44) 


Lever or gear type 
None; by hand* 
Gear type 


1/2 (12.7) 


K,L 

K, L,M 


Annealed 
Drawn 


2-1/4 
4-1/2 
2-1/2 


(57) 
(114) 
(64) 


Lever or gear type 
None; by hand* 
Gear type 


3/4 (19.1) 


K, L 

K 

L 

K 

K, L 


Annealed 
Drawn 


3 
4-1/2 
6 
3 
4 


(76) 
(114) 
(152) 
(76) 
(102) 


Lever or gear type 
None; by hand* 
None, by hand* 
Gear type 
Heavy-duty gear type 


1 (25.4) 


K, L 


Annealed 


4 
7-1/2 


(102) 
(191) 


Gear type 
None; by hand* 


1-1/4 (32) 


K, L 


Annealed 


9 


(229) 


None; by hand* 



* When bending by hand, without the use of bending equipment, a circular wooden disc is 
used. The radius of the disc should be about 1/4 to 1/2 inch less than the minimum bend 
radius shown. 



239 



UNIFORM PLUMBING CODE 



~> 



~> 



240 



Installation Standard 

For 

TILE-LINED SHOWER RECEPTORS (and Replacements) 

IAPMO IS 4-96 



This standard specification for the installation of tile- 
lined shower receptors is the result of extensive 
study and research by the following: 

Ceramic Tile Institute of America 

Associated Tile Contractors of Southern 

California, Inc. 

Tile Layers Local No. 18 of I.U.B.A.C, United 



States and Canada 

Tile Helpers Local No. 18 of I.U.B.A.C, of the 

United States and Canada 

International Association of Plumbing and 

Mechanical Officials 

Job Problem and Technical Committee 



APPROVED CONSTRUCTION OF TILE-LINED SHOWER RECEPTORS 

STANDARD SPECIFICATION FOR THE INSTALLATION OF 
TILE-LINED SHOWER RECEPTORS 



Receptor lining must extend 3' 
(76.2 mm) above top of 
finished darn and outward on 
face of rough jamb. 



Finish height of dam to be at 
least 2" (50.8 mm) above high 
point of shower drain. 



Receptor lining must extend 
3" (76.2 mm) above top of 
finished dam and outward on 
face of rough jamb. 



Fur out or notch studs to 
receive lining. 

Keep lining flush with face of 
studs or furring. 



Mortar setting bed with 
approved waterproofing 
additive. 

See Section 2.5. 




Receptor lining turned over dam 
and thoroughly tacked outside. 
No punctures less than 1" (25.4 
mm) above the finished dam or 
threshold on the interior and top 
of dam or threshold. 

Receptor lining shall be pitched 
not less than 1/4" per foot (20.8 
mm/m) to weep holes in drain. 



For receptor lining see Section 
3.2. 



Flange of approved type sub drain set 
exactly level with sub floor with clamping 
ring or other device to make tight 
connection with receptor lining 



1024 (0.66m 2 ) minimum floor area 
finish floor to have minimum of 1/4" 
(20.8 mm/m) and maximum of 1/2" 
(41.7 mm/m) pitch to drain per foot. 



Minimum of 0.05 inch (1.3 mm) thickness strainer 



241 



IS 4 



UNIFORM PLUMBING CODE 



1. General 

1.1 Inspection of Work - All surfaces prepared 
by others shall be inspected by the tile 
installer before starting tile work and all 
unsatisfactory conditions reported to the 
Administrative Authority. Starting tile work by 
the tile installer shall be considered as 
acceptance of surfaces prepared by others. 

1.2 Surface - All surfaces to receive tile work 
shall be clean, structurally sound, and conform 
in every way to the local building code. 
(Note: No tile work shall proceed until the 
pan and drain construction has been 
inspected and approved by the 
Administrative Authority, where required.) 

2. Materials 

2.1 Tile Quality and Grade - Tile shall comply 
with American National Standard 
Specification for Ceramic Tile, A137.1 
(equivalent to and incorporating U.S. Dept. 
of Commerce Simplified Practice 
Recommendation, R61-61 and Federal 
Specification SS-T-308b, Tile, Floor, Wall, 
and Trim Units, Ceramic), or CTI 69.5. 

2.2 Cement - Cement shall be portland cement 
type I or type II, conforming to ASTM C-150. 

2.3 Sand - Sand shall be damp, clean and 
graded ASTM C-1 44. 

2.4 Water - Water shall be potable. 

2.5 Reinforcing shall be 2.5 lbs. per sq. yard 
(1.1 kg per m 2 ) or greater galvanized metal 
lath conforming to ANSI A42.3 or 2 inches x 
2 inches (51 mm x 51 mm), 16/16 gage or 3 
inches x 3 inches (76 mm x 76 mm) mesh, 
13x13 gage or 1-1/2 inches x 2 inches (38 
mm x 51 mm) mesh, 16x13 gage steel, wire 
conforming to ASTM A82 and A185. 

2.6 Asphalt shall conform to Federal 
Specification SS-A-0666, Type Z, Grade 2, 
Class A. 

2.7 Plastic Roof Cement shall conform to 
Federal Specifications SS-C-153. 

2.8 Water Resistant Felt Membrane - The 
water resistant felt membrane shall be at 
least 15 lb. (6.8 kg) asphalt saturated felt 
conforming to Type I, Federal Specification 
HH-F-191 (a). 

2.9 Plastic Membrane shall comply with 
applicable standards listed in Table 14-1 of 
the UPC. 

2.10 Other Membranes - Where the 
Administrative Authority approves their use, 
non-metallic sub-pans or linings or lead sheets 
weighing not less than 4 lbs. per sq. foot 
(191 .5 Pa) and copper pans of at least No. 24 
B & S gage (Brown & Sharp 0.0201 inches) or 
greater in thickness may be used. 



2.11 Waterproofing Admixture - The mortar 
bed of the receptor shall be mixed with a 
waterproof admixture approved by the 
Administrative Authority in the amounts 
allowed by such approval. 

CURRENTLY APPROVED MORTAR ADDITIVES 

Anti-Hydro— 1 qt. (0.95 I) per sack of cement 

Plastiment— 1 lb. (0.5 kg) of powder per sack 

of cement 

Plastiment— 2 oz. (56.7 g) of fluid per sack 

of cement 

Sika 3A— 1 qt. (0.95 I) per sack of cement 

Suconem (Red Label) — 1 pint (0.47 I) per 

sack of cement 

3. Installation 

3.1 Shower Drains - An approved type shower 
floor drain with sub-drain shall be installed 
with every such shower membrane. Flange 
of each sub-drain shall be accurately set 
exactly level with sloping sub-floor and shall 
be equipped with a clamping ring or other 
approved device to make a tight connection 
between the membrane and the sub-drain. 
The sub-drain shall have weep holes into the 
waste line. The weep holes located in the 
subdrain clamping ring shall be protected 
from becoming clogged during the placment 
of finish materials. The drain shall be of 
such design that there will be not less than 
2" (51 mm) depth from the top of the sub- 
drain flange to top of the strainer. Unless 
otherwise approved by the Administrative 
Authority, drains shall be located in the 
approximate center of the shower area. 

3.2 Sloping Sub-Floor and Shower Membrane 
- All lining materials shall be pitched one 
quarter (1/4) inch per foot (20.8 mm/m) to 
weep holes in the sub-drain by means of a 
smooth and solidly formed sloping sub-base. 
All such lining materials shall extend upward 
on the side walls and rough jambs of the 
shower opening to a point not less than 
three (3) inches (76 mm) above the top of 
the finished dam or threshold and shall 
extend outward over the top of the rough 
threshold and be turned over and fastened 
on the outside face of both the rough 
threshold and the jambs. 

3.2.1 Non-metallic shower sub-pans or linings may 
be built-up on the job site of not less than 
three (3) layers of standard grade fifteen (15) 
pound (6.8 kg) asphalt impregnated roofing 
felt. The bottom layer shall be fitted to the 



242 



TILE-LINED SHOWER RECEPTORS 



IS 4 



formed sub-base and each succeeding layer 
thoroughly hot-mopped to that below, with 
hot asphalt conforming to Fed. Spec. SS- 
A0666 Type Z, Grade 2, Class A on the 
basis of twenty (20) pounds (9.1 kg) of 
asphalt per layer per square. All corners 
shall be carefully fitted and shall be made 
strong and water-tight by folding or lapping, 
and each corner shall be reinforced with 
suitable webbing hot-mopped in place. All 
folds, laps and reinforcing webbing shall 
extend at least four (4) inches (102 mm) in 3.4 
all directions from the corner and all webbing 
shall be of approved type and mesh, 
producing a tensile strength of not less than 
fifty (50) pounds per square inch (344.5 kPa 
per square meter) in either direction. 

3.2.2 Non-metallic shower sub-pans or linings may 
also consist of single or multi-layers of other 
approved equivalent materials, suitably 
reinforced and carefully fitted in place on the 
job site, as elsewhere required in this section 
according to manufacturer's recommended 
installation procedures. 

Where flexible plastic sheet membranes are 
used, corners shall be carefully constructed 
by folding or bonding of prefabricated 
reinforcing corner. Joints in flexible plastic 
sheeting shall be constructed with the 
appropriate solvent bonding liquid, bodied 
solvent cement or thermal welding. 

3.2.3 Where lead and copper pans are used as 
membranes, the installation shall be made in 
similar manner as required for felt 
membranes except the asphalt moppings, 
and in addition the pans shall be insulated 
from all concrete and mortar surfaces and 
from all conducting substances other than 
their connecting drain by 15 lb. (6.8 kg) 
asphalt saturated felt or an approved 
equivalent hot mopped to the lead or copper 
pan. Joints in lead and copper pans shall not 
be soldered, but shall be burned or silver 
brazed respectively. 

3.2.4 All linings shall be properly recessed and 
fastened to approved backing so as not to 
occupy the space required for the wall 
covering and shall not be nailed or 
perforated at any point which will be less 
than one (1) inch (25.4 mm) above the 
finished dam or threshold. 

3.3 Tests - Upon installation, all linings shall be 
tested for water tightness by being filled to 
the top of the rough threshold with water for 
a period of time sufficient to establish their 3.5 
water tightness. (Usually twenty-four (24) 



hours with no loss of water. See the local 
Administrative Authority for exact time limit.) 
A test plug shall be so placed that both the 
upper and under sides of the lining shall be 
subjected to test at its point of contact with 
the sub-drain. When the test plug is 
removed, all of the test water shall drain out 
by gravity through the weep holes. A ring of 
non-absorbent material must be placed 
around the weep holes to keep them open 
when the finish materials are installed. 
Receptor - Shower floor shall be of ceramic 
tile set in portland cement mortar mixed in 
the proportion of one (1) part portland 
cement to four (4) parts of mortar sand by 
volume and shall be provided with an 
approved shower drain designed to make a 
water-tight joint at the floor. The mortar 
mixture shall be of such consistency that a 
troweled surface readily assumes a smooth 
screeded surface. All concrete mortar bases 
shall be mixed with an approved 
waterproofing admixture and properly 
reinforced with 2.5 lbs. per square yard (1.1 
kg per square m) or more galvanized metal 
lath or 2 inches x 2 inches (51 mm x 51 
mm), 16/16 gage or 3 inches x 3 inches (76 
mm x 76 mm) mesh, 13x13 gage or 1-1/2 
inches x 2 inches (38 mm x 51 mm) mesh, 
16 x 13 gage cold drawn welded steel wire 
fabric located in the approximate center of 
the mortar bed and extending at least 3 
inches (76 mm) at any point. The finished 
floor shall be not less than 2 inches (51 mm) 
measured from the top surface of the 
membrane. The high point of the tile floor 
shall be not less than 2 inches (51 mm) or 
more than 9 inches (229 mm) below the top 
of the finished dam and shall have a 
minimum of 1/4 inch (6.4 mm/m) and a 
maximum of 1/2 inch (19.1 mm/m) pitch per 
foot toward the drain. Shower walls to a 
minimum height of 3 inch (76 mm) and not 
less than 1 inch (25.4 mm) above the 
finished dam shall be lined with ceramic tile 
set in portland cement mortar. 
Exception: Special use shower 

compartments for wheelchair use may 
eliminate the curb or threshold. The required 
slope and depth shall be maintained from 
the door or entry to the drain opening. 
The minimum distance between the door or 
entry to the drain opening shall be 4 feet 
(1219 mm). 

Floors of public shower rooms shall have a 
non-skid surface and shall be drained in 



243 



IS 4 



UNIFORM PLUMBING CODE 



such a manner that waste water from one 
bather will not pass over areas occupied by 
other bathers. Gutters in public or gang 
shower rooms shall have rounded corners 
for easy cleaning and shall be sloped not 
less than two (2) percent toward drains. 
Drains in such gutters shall be spaced not 
more than eight (8) feet (2438 mm) from side 
walls or more than sixteen (16) feet (4877 
mm) apart 
3.6 Shower walls, including shower walls over 
bathtubs, shall be constructed of dense, 
non-absorbent waterproof materials such as 
ceramic tile set in portland cement mortar or 
approved cementitious backer unit when no 
materials are adversely affected by moisture 
to a height of not less than six (6) feet (1829 
mm) above the floor. 

REPLACEMENT REQUIREMENTS 

4. Purpose 

4.1 The purpose of this section is to provide the 
necessary criteria for the installations of 
those shower liners which have been found 
necessary to be replaced. 

5. Scope 

5.1 Those requirements listed in Section 6, 
Replacement Modifications will prevent the 
unnecessary removal of tile if compliance 
with the Code requirements for new work 
were followed. 

5.2 Requirements for replacement liners that are 
not necessary in new installations, which 
shall be properly complied with are listed in 
7, Additional Requirements for 
Replacements. 

6. Replacement Modifications 

6.1 Top of lining may be lower than three (3) 
inches (76 mm) on interior wall surfaces, but 
in no case shall it be lower than one (1) inch 
(25.4 mm) above the top of the rough dam. 
The lining shall be sealed to the existing 
sound tile. (See the manufacturer's 
recommendations for the proper sealant.) 

6.2 Lining need not be turned down and 
fastened outside the rough threshold and 
jamb but it shall be sealed to the existing 
sound mortar. (See manufacturer's 
recommendations for proper sealant.) 

6.3 When existing sound tile is lower than three 



(3) inches (76 mm) on the jambs, the 
membrane shall be sealed tight to that 
sound tile. In no case shall the membrane 
turn up and be sealed to the sound tile less 
than three-quarters (3/4) inch (19.1 mm) 
above the rough threshold. 
6.4 If there is room for a minimum of one-half 
(1/2) inch (12.7 mm) of mortar plus the 
thickness of the tile on the vertical walls, the 
lining does not have to be recessed flush to 
the studs. 

7. Additional Requirements for Replacements 

7.1 Flashing behind the existing sound tile work 
and over the top of the new lining. Flashing 
is to be fifteen (15) pound (6.8 kg) felt or 
equivalent, backed up with wire mesh for 
stiffness to hold it in place. (See Figure 2.) 
Flashing shall be cut to fit between the studs 
and behind the existing sound tile and large 
enough to nail securely to the studs prior to 
installing the replacement tile. 



EXISTING TILE 

MORTAR BED 

W/P PAPER 

AND METAL LATH 



FLASHING IN PLACE 

CONTINUOUS CAULKING 
FLASHING INSERTED 

FLASHING IN PLACE 
NEW LINING 



Figure 2 

Continuous bead of caulking between 
existing mortar and replacement mortar bed. 




7.2 



ADOPTED: 1966 

REVISED: 1977, 1982, 1990, 1992 



244 



Installation Standard 

For 

ABS BUILDING DRAIN, WASTE AND VENT PIPE AND FITTINGS 

IAPMO IS 5-92 



This installation standard shall apply to ABS 
building drain, waste and vent systems as governed 
by the Uniform Plumbing Code. Material Standard 
ASTM D2661-85a, "Standard Specification of 
Acrylonitrile-Butadiene-Styrene (ABS) Plastic Drain, 
Waste and Vent Pipe and Fittings," or ASTM F628- 
85, "Acrylonitrile-Butadiene-Styrene (ABS) Schedule 
40 Plastic, Drain, Waste and Vent Pipe with a 
Cellular Core," shall form a part of this standard. 

Installation, material and inspection shall comply 
with the current edition of the Uniform Plumbing 
Code as published by the International Association of 
Plumbing and Mechanical Officials and shall also 
comply with this standard. 

Note: The Building Official shall be consulted about 
penetration of fire separations, height and area or 
other limitations. 

Note: The following sections of the Uniform 
Plumbing Code apply. 



202.0 
Table 14-1 



301.1 
704.4 
707.1 
311.8 
310.0 
311.0 
101.4.1.1 
313.0 

314.0 
314.0 

103.5 

723.0 

701.0 

903.0 

903.4 

1003.0 

316.1.1 

316.1.5 



Definition ABS 

Pipe and Fittings 

ASTM D2661-94a D3311-92* 

ASTM D21 22-90 F402-93 

ASTM F628-93 

Minimum Standards 

Closet Flanges 

Cleanout Fittings 

Fittings Screwed 

Workmanship 

Prohibited Fittings and Practices 

Repair and Alterations 

Protection of Piping, Materials and 

Structures 

Hangers and Supports (Vertical Piping) 

Hangers and Supports (Horizontal 

Piping) 

Inspection 

Testing 

Materials (Drainage) 

Materials (Venting) 

Straining or Bending Pipe 

Traps Described 

Threaded Joints 

Type of Joints - Solvent Cement Plastic 

Pipe Joints 



316.2.3 Special Joints 

316.3.1 Flanged Fixture Connections 

316.4 Prohibited Joints and Connections 

31 7.0 Increasers and Reducers 

1101.3 Materials Uses 

ABBREVIATIONS 

ASTM American Society for Testing and Materials 
IAPMO International Association of Plumbing and 
Mechanical Officials 
UPC Uniform Plumbing Code 

301.1 Minimum Standards 

301.1.1 Pipe 

ABS pipe is furnished in straight lengths. 
The pipe is black in color. The pipe wall is 
the same thickness as that of Schedule 
40 (IPS) standard steel pipe. 
Pipe shall be marked on two sides, 180° 
apart or spirally, in letters not less than 
3/16 inch (4.8 mm) high in a contrasting 
color and shall contain at least the 
following, at not more than two (2) feet 
(610 mm) intervals: 

(a) Manufacturer's name or trademark; 

(b) ASTM designation; 
Nominal pipe size; 

Symbol ABS-DWV or COEX ABS 
FOAMED CORE DWV; 
Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark; 
Manufacturer's code; and 
Any other marking required or 
permitted by law. 

301.1.2 Fittings 

Fittings are black. Refer to Tables in 
ASTM D2661-85a and D3311-82 for 
dimensions and tolerances for pipe, fitting 
sockets and laying lengths. 
Fittings shall be marked on the body or 
hub on both sides. The markings shall 
consist of at least the following: 

(a) Manufacturer's name or trademark; 

(b) Symbol ABS-DWV; 

(c) Products listed by IAPMO that are 
covered by this Standard shall be 



(c) 
(d) 

(e) 



(f) 

(g) 



*Although referenced in this standard, some of the fittings shown in the standard are not acceptable under the 
Uniform Plumbing Code. 



245 



IS 5 



UNIFORM PLUMBING CODE 



301.1.3 



310.0 
310.1 



313.0 
313.1 



313.2 



labeled with the designated IAPMO 

certification mark; and 
(d) Any other markings required or 

permitted by law. 
Solvent Cement 

Solvent cement shall be as specified in 
ASTM Standard D2235-81. Solvent 
cement labels shall contain at least the 
following: 
(a) Manufacturer's or supplier's name 

and address, tradename, trademark 

or both; 

Cement for ABS (pipe and fittings); 

ASTM designation D2235; 

Lot number; 

Recommended procedure for use and 

safety precautions; 

Products listed by IAPMO that are 

covered by this Standard shall be 

labeled with the designated IAPMO 

certification mark; and 

Any other markings required or 

permitted by law. 



(b) 
(c) 
(d) 
(e) 

(f) 



(9) 



Workmanship 
Alignment 

All piping system components shall be 
aligned properly without strain. Pipe shall 
not be bent or pulled into position. 
Vertical piping shall be maintained in 
alignment between floors with midstory 
guides. Pipe and fittings shall be so 
positioned that identifying markings shall 
be readily visible for inspection. 

Protection of Piping 
Storage 

Pipe and fittings should not be stored in 
direct sunlight. However, exposure to 
direct sunlight during normal construction 
periods is not considered harmful. Pipe 
shall be stored in such a manner as to 
prevent sagging or bending. 
Expansion And Contraction 
Thermal expansion and contraction of 
plastic drain waste and vent systems shall 
be taken into consideration. Thermal 
expansion and contraction may be 
controlled by several methods: offset, 
expansion joints or restraints. Regardless 
of method utilized, certain conditions shall 
be met. 

(a) Support, but do not rigidly restrain 
piping at changes of direction. 

(b) Do not anchor pipe rigidly in walls. 

(c) Holes through framing members must 



be adequately sized to allow for free 

movement. 
DWV installations with frequent changes 
in direction will compensate for thermal 
expansion and contraction. Expansion 
joints may be utilized in vertical straight 
runs in excess of thirty (30) feet (9144 
mm) provided they are installed per 
manufacturer's installation instructions. 
Except piping buried below ground, 
horizontal and vertical piping should be 
installed with restraint fittings or a 
minimum twenty-four (24) inches (610 
mm) 45° offset every thirty (30) feet (9144 
mm). 

Thermal expansion for installations 
subject to temperature changes may be 
determined from Table 3-1. The linear 
expansion shown is independent of the 
diameter of the pipe. 

313.3 Exposed Piping 

Piping shall not be exposed to direct 
sunlight. Exception: Vent piping through 
roof. Plumbing vents through roof, 
exposed to sunlight shall be protected by 
water base synthetic latex paints. 
Adequate support shall be provided where 
ABS piping is exposed to wind, snow and 
ice loading. 

313.4 Protection From Damage 

Piping passing through wood studs or 
plates shall be protected from puncture by 
a minimum 1/16 inch (1.6 mm) thick steel 
plate. Piping shall be protected from 
concrete form oil. 

313.5 Anti-Freeze Protection 
Anti-Freeze Protection - ABS pipe and 
traps can be protected from freezing by 
the use of one of the following solutions or 
mixtures: 

(a) 4 quarts (3.8 liters) of water mixed 
with 5 quarts (4.8 liters) of glycerol 

(b) 2-1/2 lbs. (1.1 kg) of magnesium 
chloride dissolved in one gallon (3.8 
liters) of water 

(c) 3 lbs. (1.4 kg) of table salt dissolved 
in one gallon (3.8 liters) of water. 

The salt solutions are effective to 
approximately 10°F (-12°C). If lower 
temperatures are anticipated, the pipe 
should be drained or the glycerol solution 
should be used. 



246 



ABS BUILDING DWV PIPE AND FITTINGS 



IS 5 



TABLE 3-1 
Thermal Expansion Table 

Chart Shows Length Changes in Inches vs. Degrees Temperature Change 
Coefficient of Linear Expansion: e = 5.5 x 10* 5 in/in °F 



Length 
















(feet) 


40°F 


SOT 


60°F 


70°F 


80°F 


90°F 


100°F 


20 


0.536 


0.670 


0.804 


0.938 


1.072 


1.206 


1.340 


40 


1.070 


1.340 


1.610 


1.880 


2.050 


2.420 


2.690 


60 


1.609 


2.010 


2.410 


2.820 


3.220 


3.620 


4.020 


80 


2.143 


2.680 


3.220 


3.760 


4.290 


4.830 


5.360 


100 


2.680 


3.350 


4.020 


4.700 


5.360 


6.030 


6.700 



TABLE 3-1 (Metric) 
Thermal Expansion Table 

Chart Shows Length Changes in Millimeters vs. Degrees Temperature Change 

Coefficient of Linear Expansion: e = 0.3 mm 











mm 


°C 




Length 
(mm) 


4°C 


10°C 16°C 


21 °C 


27°C 


32°C 


38°C 


6096 


13.6 


17.0 20.4 


23.8 


27.2 


30.6 


34.0 


12192 


27.2 


34.0 40.8 


47.8 


52.1 


61.5 


68.3 


18288 


40.9 


51.1 61.2 


71.6 


81.8 


92.0 


102.1 


24384 


54.4 


68.1 81.8 


95.5 


110.0 


122.7 


136.1 


30480 


68.1 


85.1 102.1 


119.4 


136.1 


153.2 


170.2 


Example: 

Highest Temperature expected 1 00°F 
Lowest Temperature expected 50°F 

50°F 


(38°C) 
(10° C) 
(10°C) 









Length of run - 60 feet (18288 mm) from chart, read 2.010 inches (51 mm) 
linear expansion that must be provided for. 



313.6 Piping Installed in Fire Resistive 314.2 
Construction 

Where piping is installed and penetrates 
required fire resistive construction the fire 
resistant integrity of the construction shall 
be as required by the Administrative 
Authority, or when not established by the 
building code, by qualified testing methods 
approved by the Administrative Authority. 
Approval shall be obtained prior to 
installing any such piping. 

314.0 Hangers and Supports 

314.1 Abrasion 

Hangers and straps shall not compress, 
distort, cut or abrade the piping and shall 
allow free movement of pipe. Pipe 
exposed to damage by sharp surfaces 
shall be protected. 



Support 

Support all piping at intervals of not more 
than four (4) feet (1219 mm), at end of 
branches, and at change of direction or 
elevation. Supports shall allow free 
movement, but shall restrict upward 
movement of lateral runs so as not to 
create reverse grade. Vertical piping shall 
be supported at each story or floor level. 
Alignment of vertical piping shall be 
maintained between floors with the use of 
a mid-story guide. Support trap arms in 
excess of three (3) feet (914 mm) in length 
as close as possible to the trap. Closet 
rings shall be securely fastened with 
corrosive resistant fasteners to the floor 
with top surface one-quarter (1/4) inch 
(6.4 mm) above finish floor. 



247 



IS 5 



UNIFORM PLUMBING CODE 



701.0 Materials, Drainage-Deleted 
903.0 Materials, Vent-Deleted 



316.1.4 Procedure. 



1003.0 
1003.1 



705.0 
705.1 



316.0 
316.1 



316.1.1 



316.1.2 



316.1.3 



Traps 

Connection to Metal Traps 

Traps shall be connected by means of 
listed threaded trap adapters. 
Joints 

Caulked Joints 

Make connections or transitions to bell- 
and-spigot cast iron soil pipe and fittings, 
and to bell-and-spigot pipe and fittings of 
other materials with listed mechanical 
compression joints designed for this use, 
or caulked joints made in an approved 
manner. In caulking, pack the joint with 
oakum or hemp and fill with molten lead to 
a depth of not less than (1) inch (25.4 
mm). Allow a period of four (4) minutes for 
cooling, following which, caulk the lead at 
the inside and outside edges of the joint. 
Lead shall not be overheated. Heat lead to 
melting point only. 

Note: Caulked joints should be avoided if 
possible. 

Solvent Cement Joints 
Selection. Solvent cement shall be 
recommended for ABS by the 
manufacturer. Follow manufacturer's 
recommendations for types of solvent 
cement for such conditions as 
temperature over 100°F (38°C), or 
humidity over 60%. 

Handling (to maintain effectiveness). 
Solvent cement containers no larger than 
1 quart (1 liter) should be used in the field 
(to avoid thickening due to evaporation). 
Keep container closed and in the shade 
when not in use. Keep applicator 
submerged in solvent cement between 
applications. When solvent cement 
becomes thicker, THROW IT AWAY. 
Solvent cement shall NOT be thinned. 
Size of Applicator. Applicator should be 
about one half the pipe diameter. Do not 
use small applicator on large pipes. 
Ordinary pure bristle paint brush or 
applicators furnished with product are 
satisfactory. 

Application. Solvent cement shall be 
applied deliberately, but without delay (two 
men may be needed to make large joints). 
Use special care when temperature is 
over 100°F (38°C) or humidity is over 
60%. 



XI SAFETY REQUIREMENTS AND 

PRECAUTIONS 

XI.1 General. Solvents contained in 
ABS plastic pipe cements are 
classified as airborne 
contaminants and flammable and 
combustible liquids. Precautions 
listed in this appendix should be 
followed to avoid injury to 
personnel and the hazard of fire. 

Xl.2 Safety Precautions: 

Xl.2.1 Prolonged breathing of solvent 
vapors should be avoided. When 
pipe and fittings are being joined 
in partially enclosed areas, a 
ventilating device should be used 
in such a manner to minimize the 
entry of vapors into the breathing 
areas. 

Xl.2.2 Solvent Cements should be kept 
away from all sources of ignition, 
heat, sparks and open flame. 

Xl.2.3 Containers for solvent cements 
should be kept tightly closed 
except when the cement is being 
used. 

Xl.2.4 All rags and other materials used 
for mopping up spills should be 
kept in a safety waste receptacle 
which should be emptied daily. 

Xl.2.5 Most of the solvents used in ABS 
pipe cements can be considered 
eye irritants and contact with the 
eye should be avoided for it may 
cause eye injury. Proper eye 
protection and the use of 
chemical goggles or face shields 
is advisable where the possibility 
of splashing exists in handling 
solvent cements. In case of eye 
contact, flush with plenty of water 
for 15 min.utes and call a 
physician immediately. 

Xl.2.6 Repeated contact with the skin 
should be avoided. Proper 
gloves impervious to and 
unaffected by the solvents should 
be worn when frequent contact 
with the skin is likely. Application 
of the solvents or solvent 
cements with rags and bare hand 
is not recommended. Brushes 
and other suitable applicators can 
be used effectively for applying 
the solvent cement, thus avoiding 



248 



ABS BUILDING DWV PIPE AND FITTINGS 



IS 5 



316.1.5 



skin contact. In the event of 
excessive contact, remove 
contaminated clothing and wash 
skin with soap and water. 

Step 1 Cut pipe square with hand saw 
and miter box, mechanical cut-off 
saw or tube cutter designed for 
plastic. 

Step 2 Ream inside and chamfer outside 
of pipe (to eliminate all burrs). 

Step 3 Clean all dirt, moisture and 
grease from pipe and socket. Use 
a clean, dry rag. 

Step 4 Check dry fit of pipe in fitting. 
Pipe should enter fitting socket 
from 1/3 to 3/4 depth of socket. 

Step 5 Apply a light coat of ABS solvent 
cement to inside of socket using 
straight outward strokes (to keep 
excess solvent out of socket). 
This is also to prevent solvent 
cement damage to pipe. For loose 
fits, apply a second coat of 
solvent cement. Time is important 
at this stage. See Section 316.1 .3. 

Step 6 While both the inside socket 
surface and the outside surface 
of the pipe are SOFT and WET 
with solvent cement, forcefully 
bottom the pipe in the socket, 
giving the pipe a one-quarter turn, 
if possible. The pipe must go to 
the bottom of the socket. 

Step 7 Hold the joint together until tight 
(partial set). 

Step 8 Wipe excess cement from the 
pipe. A properly made joint will 
normally show a bead around its 
entire perimeter. Any gaps may 
indicate insufficient cement or the 
use of light bodied cement on 
larger diameters where heavy 
bodied cement should have been 
used. 

Step 9 The system shall not be tested 
until the joints have cured (set) at 
least as long as recommended by 
the manufacturer. 

Threaded Joints 

Listed adapter fittings shall be used for the 

transition to threaded connections. No 

threaded female ABS fitting(s) or joint(s) 

shall be located in a non-accessible 

location. The joint between the ABS pipe 

and adapter fitting shall be of the solvent 

cement type. 



Only listed thread tape or thread lubricant, 
specifically intended for use with plastics 
shall be used. Conventional pipe 
compounds, putty, linseed oil base 
products and unknown mixtures shall be 
removed and be replaced with new 
materials. Where a threaded joint is made, 
obtain tightness by maximum hand 
tightening plus additional tightening with a 
strap wrench not to exceed one full turn. 

316.2.3 Special Joints 

316.2.3.1 Connection To Non-Plastic Pipe 

When connecting plastic pipe to other 
types of piping, use only listed fittings and 
adapters, designed for the specific 
transition intended. 

316.4 Prohibited Fittings and Connections 

(a) Drainage system - Any fitting or 
connection which has an 
enlargement, chamber or recess with 
a ledge, shoulder or reduction of pipe 
area, that offers an obstruction to flow 
through the drain is prohibited. 

(b) No fitting or connection that offers 
abnormal obstruction to flow shall be 
used. The enlargement of a three (3) 
inch (76 mm) closet bend or stub to 
four (4) inches (102 mm) shall not be 
considered an obstruction. 



ADOPTED: 1966 

REVISED: 1971, 1974, 1975, 1976, 1977, 1981, 
1982, 1983, 1987, 1989, 1990, 1992 



249 



UNIFORM PLUMBING CODE 



^ 



250 



Installation Standard 

For 

HUBLESS CAST IRON SANITARY AND RAINWATER SYSTEMS 

IAPMO IS 6-95 



This installation standard is for use with IAPMO- 
listed systems of hubless cast iron soil pipe and 
fittings, utilizing lAPMO-listed couplings. 

This standard shall serve to supplement any 
existing applicable standards and requirements of 
appropriate codes and laws regulating use of 
hubless cast iron soil pipe and fittings in building 
sewer, drainage, waste, vent, and rainwater systems, 
and to provide the necessary requirements for 
installation, use and inspection of piping and fittings 
for this purpose. This system may be used in any 
location where cast iron soil pipe is acceptable under 
the Uniform Plumbing Code. 

The provisions of this standard are not intended 
to prevent the use of any alternate material or 
method of construction, provided it meets the 
requirements of the standard. 

Note: The following sections of the Uniform 
Plumbing Code apply to this standard: 



301.1 


Minimum Standards (Material) 


704.4 


Closet Flanges 


Table 14-1 


Plumbing Material Standards 


310.0 


Workmanship 


311.0 


Prohibited fittings and 




practices 


101.4.1.1 


Repair and alterations 


313.0 


Protection of piping materials 




and structures 


314.0 


Hangers and Supports 


Table 3-1 




712.2 and 712.3 


Testing 


701.0 


Materials (Drainage) 


Table 7-3 


Sizing 


Table 7-5 


Sizing 


707.14 


Cleanout Plugs 


903.0 


Materials (Venting) 


1003.0 


Traps Described 


705.1 


Type of joints 


705.3.2 


Expansion Joints 


316.4 


Prohibited joints and 




connections 


317.0 


Increasers and reducers 


Chapter 1 1 


Storm Drainage 


1101.3 


Materials Uses 


1101.11 


Roof Drainage 



301.1 Minimum Standards 

Hubless pipe, fittings and couplings shall 



be manufactured in strict compliance with 
appropriate standards acceptable to 
IAPMO. 
301.1.1 All hubless system components shall be 
clearly marked with the following: 

(a) Manufacturer's name or trademark; 

(b) Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark; 

(c) Country of origin; and 

(d) Any other markings required by law. 

301.1.1.1 Pipe shall be legibly and continuously 
marked along the full length of the barrel. 

301.1.1.2 All installations shall be made so that the 
components can be readily identified. 
When laying hubless pipe in a ditch, the 
identification shall be on the top side of 
the pipe. When in walls, the identification 
shall be on a side readily visible to the 
inspector. 

301.1.1.3 Markings on fittings shall be located a 
minimum 1-1/2" (38 mm) from any end 
where a coupling may be attached for 
sizes through 4" (102 mm) and a minimum 
of 2" (51 mm) for larger sizes. With the 
exception of the closet bends, fittings are 
usually provided with a small positioning 
lug. When properly positioned, the gasket 
in other than wider body couplings will rest 
against but will not cover the lug. Gaskets 
for wider body couplings will cover the lug. 

310.0 Workmanship 

All piping systems shall be installed and 
supported in a workmanlike manner. 

314.0 Hangers and Supports 

Support and stability of all components of 
a hubless cast iron sanitary and rainwater 
system shall be given prime consideration. 

314.1 Vertical hubless systems shall be 
supported per Table 3-1 of the Uniform 
Plumbing Code. 

314.2 Horizontal hubless systems shall be 
supported per Table 3-1 of the Uniform 
Plumbing Code. Supports shall be 
adequate to maintain alignment and 
prevent sagging and shall be placed within 
eighteen (18) inches (457 mm) of the joint. 



251 



IS 6 



UNIFORM PLUMBING CODE 



314.2.1 Joints shall be supported at least at every 
other joint except that when the developed 
length between supports exceeds four (4) 
feet (1219 mm) they shall be provided at 
each joint. Supports shall also be 
provided at each horizontal branch 
connection. Such support shall be placed 
immediately adjacent to the coupling. 

314.2.2 Suspended lines shall be suitably braced 
to prevent horizontal movement. 

314.2.3 Closet bends, trap arms and similar 
branches shall be secured against 
movement in any direction. 

314.3 Hubless systems, in the ground shall be 
laid on a firm bed for its entire length 
except where support is otherwise 
provided which is adequate in the 
judgement of the Administrative Authority. 
Vertical sections and their connecting 
branches shall be adequately staked and 
fastened to driven steel pipe or reinforcing 
bars so as to remain stable while backfill 
is placed or concrete is poured. 



ADOPTED: 1966 

REVISED: 1972, 1974, 1975, 1982, 1989, 1991, 

1993 



705.1 



705.1.1 



705.1.2 



Joints 

During installation assembly, hubless pipe 
and fittings shall be inserted into the 
gasket and firmly seated against a center 
stop. Center stop ring or fittings shall not 
create an enlargement chamber or recess 
with a ledge, shoulder or reduction of pipe 
area or offer an obstruction to flow. In 
order to provide a sound joint with field cut 
lengths of pipe, the ends shall be cut 
square. Clamping assemblies shall be 
properly positioned and uniformly 
tightened to the torque required by IAPMO 
listing. The use of an adequate torque 
wrench recommended by the 
manufacturer of the clamping assemblies 
shall be used. The use of adhesives, 
lubricants, sealants, etc., or the addition of 
any substance between the pipe and the 
coupling shall be prohibited. 
lAPMO-listed adapters designed for the 
specific transition intended shall be used 
for the intermembering of materials. 
The connection of closet rings, floor and 
shower drains and similar "slip over" fittings 
to hubless pipe and fittings and the 
connection of hubless pipe and fittings to 
conventional soil pipe hubs shall be 
accomplished by the use of caulked lead 
joints, or other connections listed by IAPMO. 



252 



Installation Standard 

For 

POLYETHYLENE (PE) COLD WATER BUILDING SUPPLY AND YARD PIPING 

IAPMO IS 7-90 



This standard shall govern the installation of 
polyethylene (PE) cold water building supply and 
yard piping. (See Section 604.1 of the Uniform 
Plumbing Code and Section 609.2 of this standard 
for allowable location and pressure). Installation, 
material and inspection shall comply with the current 
edition of the Uniform Plumbing Code published by 
the International Association of Plumbing and 
Mechanical Officials, and shall also comply with this 
standard. 

Note: The following sections of the Uniform 
Plumbing Code apply to polyethylene piping. 



202.0 
Table 14-1 



310.0 
313.0 

314.0 

315.0 

316.2.3 

Chapter 6 

604.1 

609.1 

609.3 

103.5.4.2 & 

103.5.3.3 



Definition of PE 

Fittings (and fasteners) for joining PE 
pipe IAPMO PS25-84 

Plastic insert fittings for Polyethylene 
(PE) Plastic Pipe 

ASTM D2609-93 
PE Pipe ASTM D2239-93 

Workmanship 

Protection of Piping, Materials and 
Structures 

Supporting in the Ground 
Backfilling 

Connection to other materials 
Water Distribution 
Location 
Depth of piping 



Testing 



Chapter 2 DEFINITIONS 

Chapter 14 

ASTM American Society for Testing and 

Materials 
IAPMO International Association of Plumbing 

and Mechanical Officials 
NSF National Sanitation Foundation 
PS Material and Property Standard 

published by IAPMO 
UPC Uniform Plumbing Code published by 

IAPMO 

301.1 Minimum Standards 

301.1.1 Material. Material shall conform to the 
appropriate standard in Table 14-1. See 
note ahead of Chapter 2 of this standard. 

301.1.1.1 Pipe. PE pipe is plastic and black. 



301.1.1.2 Fittings. Fittings are copper alloy or 
nylon barbed insert fittings. 

301.1.2 Markings 

301.1.2.1 Piping. Pipe shall be marked at intervals 
of not more than five (5) feet (1 524 mm) 
with at least the following: 

(a) Manufacturer's name or trademark; 

(b) ASTMD2239; 

(c) Pipe size; 

(d) PE 3406 or PE 3408; 

(e) Pressure rating of SDR 7 - PE 3406 
(160 psi/1 .10 mPa) and PE 3408 (200 
psi/1.38mPa); 

(f) NSF seal or marking of other 
acceptable agency; and 

(g) Pipe listed by IAPMO that is covered 
by this standard shall be labeled with 
the UPC logo to show compliance 
with this standard. 

301.1.2.2 Fittings. Fittings shall be marked with at 
least the following: 

(a) Manufacturer's name or trademark; 

(b) Size; and 

(c) Fittings listed by IAPMO that are 
covered by this standard shall be 
labeled with the UPC logo to show 
compliance with this standard. 

301.1.2.3 Bands. Bands shall be marked with at 
least the following: 

(a) Manufacturer's name or trademark; 

(b) Model; 

(c) Stainless steel, Series 300; and 

(d) Bands listed by IAPMO that are 
covered by this standard shall be 
labeled with the UPC logo to show 
compliance with this standard. 

301.1.3 Position of Markings. The identifying 
markings on pipe, and fittings shall be 
visible for inspection without moving 
materials. 



313.0 
313.1 



313.2 



Protection of Piping 
Storage. Unprotected pipe should not be 
stored in direct sunlight. The pipe shall be 
stored in a way to protect it from mechanical 
damage (slitting, puncturing, etc.). 
Thermal Expansion. The pipe shall be 
snaked in the trench bottom with enough 
slack to provide for thermal expansion and 
contraction. The normal slack created by 



253 



IS 7 



UNIFORM PLUMBING CODE 



residual coiling is generally sufficient for 
this purpose. If, however, the pipe has 
been allowed to straighten before it is 
placed in the trench, six (6) inches (152 
mm) per one hundred (100) feet (30480 
mm) of length shall be allowed for this 
purpose. 
313.3 Exposed Piping. Vertical piping may 
extend a maximum of twenty-four (24) 
inches (610 mm) above grade when 
located on the exterior of the building or 
structure and protected from mechanical 
damage to the satisfaction of the 
Administrative Authority. Where exposed 
to sunlight the pipe shall be wrapped with 
at least 0.040 in. (1 .02 mm) of tape. 

315.0 Trenching and Cover 

315.1 Trench bottoms shall be uniformly graded 
and shall be of either undisturbed soil or 
shall consist of a layer or layers of 
compacted backfill so that minimum 
settlement will take place. 

316.1 Joints 

316.1.1 Procedure. Polyethylene pipe joints shall 
be made as follows (see Section 301.1.1): 
Step 1 . Pipe shall be cut square, using a 

cutter designed for plastic pipe, 
and chamfer ends to remove 
sharp edges. 

Step 2. Place two strap-type stainless 
steel bands over the pipe. 

Step 3. Check that fittings are properly 
sized for pipe, as tubing fittings 
are not of proper size. 

Step 4. Force the end of the pipe over the 
barbed insert fittings, making 
contact with the fitting shoulder 
(the end of the pipe may be 
softened by placing in hot water). 

Step 5. Position the clamps 1 80° apart 
and tighten evenly, so as to make 
a leak-proof joint. 

316.1.2 Other Joints. Polyethylene pipe shall not 
be threaded. Joints made with adhesives 
or "solvent cementing" techniques are 
prohibited. 

604.0 Materials 

604.1 Location. Polyethylene piping shall be 
installed only outside the foundation of 
any building or structure or parts thereof. It 
shall be buried in the ground for its entire 
length except vertical piping may be 
extended above grade per Section 313.3. 



It shall not be installed within or under any 
building or structure or mobile home or 
commercial coach or parts thereof. The 
term "building or structure or parts thereof" 
shall include structures such as porches 
and steps, whether covered or uncovered, 
roofed porte-cocheres, roofed patios, 
carports, covered walks, covered 
driveways and similar structures or 
appurtenances. 
604.2 Harmful Materials. Polyethylene that has 
been in contact with gasoline, lubricating 
oil or aromatic compounds, shall not be 
installed. 

609.0 Installation 

609.1 Pipe. Kinked pipe shall not be used. PE 
pipe shall not be flared. 

609.2 Fittings. Compression type couplings 
and fittings shall be used only when 
installing one and one-half (1-1/2) inch (38 
mm) and larger pipe. Stiffeners that 
extend beyond the clamp or nut shall not 
be used. 

609.3 Bends. Changes in direction may be 
made by bends. The installed radius of 
pipe curvature shall be not less than thirty 
(30) pipe diameters, or the coil radius when 
bending with the coil. Coiled pipe shall not 
be bent beyond straight. Bends shall not be 
permitted closer than ten (10) pipe 
diameters of any fitting or valve. 

609.4 Maximum Working Pressure. Working 
pressure shall not exceed 160 psi (1.10 
mPa). 

609.5 Identification. A label shall be fastened 
to the main electric meter panel stating 
"This structure has a non-metallic water 
service". 

610.0 Sizing 

610.1 Piping shall be sized in accordance with 
UPC Section 610.0. When UPC Appendix 
A is applicable, use UPC Chart A-4 
(Copper Tubing Type L). Flow velocity 
shall not exceed 8 fps (2.4 m/s). 



ADOPTED:1968 

REVISED: 1969, 1971, 1972, 1973, 1975, 1978, 

1981,1982,1983,1989,1990 



254 



Installation Standard 

For 

PVC COLD WATER BUILDING SUPPLY AND YARD PIPING 

IAPMO IS 8-95 



This standard shall govern the installation of PVC 
piping (with solvent cemented or elastomeric 
gasketed joints) in cold water building supply and 
yard piping. (See Section 604.1 and 609.1.2 for 
allowable location and pressure.) Installation, 
material and inspection shall comply with the current 
edition of the Uniform Plumbing Code published by 
the International Association of Plumbing and 
Mechanical Officials, and shall also comply with this 
standard. 

Note: The following sections of the Uniform 
Plumbing Code apply to PVC water piping. 

202.0 Definition of PVC 

Table 14-1 Materials 

310.0 Workmanship 

313.0 Protection of Piping, Materials and 

Structures 

31 4.0 Supporting in the Ground 

315.0 Backfilling 

31 6.1 .5 Solvent-Cement Plastic Pipe Joints 

606.2.2 Use of Joints 

31 6.2.3 Plastic Pipe to Other Materials 
Chapter 6 Water Distribution 

604.1 Location 
609.0 Depth of Piping 



Chapter 2 DEFINITIONS 

Chapter 14 



ASTM 

IAPMO 

NSF 
UPC 



301.1 
301.1.1 



American Society for testing and 

Materials 

International Association of Plumbing 

and Mechanical Officials 

National Sanitation Foundation 

Uniform Plumbing Code published by 

IAPMO 

Minimum Standards 
Material. Materials shall conform to the 
appropriate standard in Table 14-1 of 
the Uniform Plumbing Code. See note 
ahead of Chapter 2 of this standard. 

APPLICABLE STANDARDS 



Type of PVC for Pipe and Fittings 
PVC 1120 or 1220 



ASTM Standard 
D1 784-81 



Pipe 

Bell-End Poly (vinyl chloride) 

PVC Pipe D2672-94 

PVC Schedule 40 D1 785-93 

PVC Schedule 80 D1 785-93 

PVC160psi (1102.4 kPa) (SDR 26) 

PVC200psi (1378 kPa) (SDR 21) 

PVC250psi (1722.5 kPa) (SDR 17) 

PVC315psi (2170.4 kPa) 

(SDR 13.5) D2241-93 

Fittings 

Schedule 40 (Socket) D2466-94 

Schedule 80 (Socket) D2467-94 

Schedule 80 (Threaded) D2464-94 

Solvent Cement 

PVC Solvent Cement D2564-93 

Primers 

PVC Primers F656-93 

301 .1 .1 .1 Pipe and Fittings. Pipe and fittings are 

manufactured from PVC plastic. 
301.1.2 Markings 

301.1.2.1 Pipe. Pipe shall be marked at intervals 
of not more than five (5) feet (1524 mm) 
with at least the following: 

(a) Manufacturer's name or trademark; 

(b) ASTMD1785orD2241; 

(c) In addition, bell end pipe, PVC, 
shall be marked D2672; 

(d) Pipe Size; 

(e) PVC 11 20 or PVC 1220; 

(f) Schedule 40 or Schedule 80, SDR 
or pressure rating on SDR pipe; 

(g) NSF seal or marking of other 
acceptable agency; and 

(h) Pipe listed by IAPMO that is 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show 
compliance with this standard. 

301.1.2.2 Fittings. Fittings shall be marked with 
at least the following: 

(a) Manufacturer's name or trademark; 

(b) Size*; 

(c) ASTM D2464, D2466 or D2467; 

(d) PVC1 or PVC 12; 

(e) Schedule 40 or Schedule 80; 

(f) NSF seal or marking of other 
acceptable agency; and 

(g) Fittings listed by IAPMO that are 



255 



IS 8 



UNIFORM PLUMBING CODE 



covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show 
compliance with this standard. 
*Note: Size and material designation 
may be omitted on smaller fittings. 

301 .1 .2.3 Solvent Cement 

301.1.2.3.1 Markings. Solvent Cement containers 
shall be marked with at least the 
following: 

(a) ASTM D2564; 

(b) NSF Seal or marking of other 
acceptable agency; and 

(c) Solvent cement listed by IAPMO 
that is covered by this standard 
shall be labeled with the designated 
IAPMO certification mark to show 
compliance with this standard. 

301.1.2.3.2 Color. Solvent Cement shall not be 
purple in color. 

301.1.2.4 Primers 

301.1.2.4.1 Markings. Primer containers shall be 
marked at least the following: 

(a) ASTM F656; 

(b) NSF seal or marking of other 
acceptable agency; and 

(c) Primer listed by IAPMO that is 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show 
compliance with this standard. 

301.1.2.4.2 Color. Primer shall be purple. 
301.1.3 Position of Markings. The identifying 

markings on pipe and fittings shall be 
visible for inspection without moving 
materials. 

313.0 Protection of Piping 

313.1 Storage. Unprotected pipe should not 
be stored in direct sunlight. The pipe 
shall be stored in a way to protect it from 
mechanical damage (slitting, puncturing, 
etc.). Exposure to sunlight during normal 
construction periods is not harmful. 
PVC solvent cements should be stored 
in a cool place, except when actually in 
use at the job site. The solvent cement 
manufacturer's specific storage 
recommendations should be followed. 

313.2 Alignment. Pipe and fittings shall be 
aligned properly without strain. 

313.3 Thermal Expansion. Pipe (except pipe 
with elastomeric gasketed joints) shall 
be "snaked" in the trench bottom with 
enough slack, at least 6 inches (152.4 
mm) per 100 feet (30480 mm), to 



compensate for thermal expansion and 
contraction before stabilizing piping. 
Stabilize piping by bringing it 
approximately to operating temperature 
before testing and backfilling by one of 
the following methods: 

(a) Shade backfill. Leave all joints 
exposed so that they can be 
examined during pressure test. 

(b) Fill with water at operating 
temperature. 

(c) Allow to stand overnight. 

313.4 Exposed Piping. Vertical piping may 

extend a maximum of 24 in. (610 mm) 
above grade when located on the 
exterior of the building or structure and 
protected from mechanical damage to 
the satisfaction of the Administrative 
Authority. Where exposed to sunlight 
the pipe shall be wrapped with at least 
0.040 in. (1 .0 mm) of tape. 

315.0 Trenching, Cover and Backfill 

315.1 Trenching and Cover. Trench bottoms 
shall be uniformly graded and shall be 
of either undisturbed soil or shall consist 
of a layer or layers of compacted backfill 
so that minimum settlement will take 
place. 

315.2 Backfill. Selected backfill shall be 
used. Tamp the backfill that is placed 
around the pipe so as to provide firm 
continuous support and proper 
compaction. Backfill at least 12 inches 
(305 mm) over pipes, except that joints 
shall be left exposed. After inspection 
and pressure test, complete backfill. 

315.2.1 Elastomeric Joints. Backfill 

immediately after installing pipe. 
Note: This is to maintain equal spaces 
within the joints for contraction and 
expansion. 

316.1 Joints 

31 6.1 .1 Solvent Cement Joints 

316.1.1.1 Selection. Follow manufacturer's 
recommendations for types of solvent 
cement for such conditions as 
temperature over 100°F (38°C), 
humidity over 60% or use of Schedule 
80 fittings. 

316.1.1.2 Handling (to maintain effectiveness). 
Package solvent cement in containers 
no larger than 1 quart (1 liter). Keep 
solvent cement can closed and in the 
shade when not in use. Keep applicator 



256 



PVC COLD WATER BUILDING SUPPLY AND YARD PIPING 



IS 8 



submerged in solvent cement between 
applications. When solvent cement 
becomes thicker, THROW IT AWAY. 
Solvent cement shall NOT be thinned. 

316.1.1.3 Size of Applicator. Applicator should 
be about one half the pipe diameter. Do 
not use small applicator on large pipes. 

316.1.1.4 Primers. All solvent cement PVC joints 
shall be made using a listed primer in 
compliance with ASTM F 656-93 and as 
specified in Section 316.1 .5 of the UPC. 

316.1.1.5 Application. Solvent cement shall be 
applied deliberately, but without delay 
(two men may be needed to make large 
joints). Use special care when 
temperature is over 100°F (38°C) or 
humidity is over 60%. 

I 316.1.1.6 Procedure 

Note: Do not take SHORT CUTS. 
Most failures are caused by short cuts. 
DONT TAKE A CHANCE. 
XI. SAFETY REQUIREMENTS 

AND PRE-CAUTIONS 1 

X1.1 General. Solvents contained in 
PVC plastic pipe cements are 
classified as airborne contami- 
nants and flammable and 
combustible liquids. Precautions 
listed in this appendix should be 
followed to avoid injury to 
personnel and the hazard of fire. 

X1.2 SAFETY PRECAUTIONS: 

X1.2.1 Prolonged breathing of solvent 
vapors should be avoided. When 
pipe and fittings are being joined 
in partially enclosed areas, a 
ventilating device should be 
used in such a manner to 
minimize the entry of vapors into 
the breathing areas. 

X1.2.2 Solvent cements should be kept 
away from all sources of ignition, 
heat, sparks and open flame. 

X1.2.3 Containers for solvent cements 
should be kept tightly closed 
except when the cement is 
being used. 

X1.2.4 All rags and other materials 
used for mopping up spills 
should be kept in a safety 
waste receptacle which should 
be emptied daily. 

X1.2.5 Most of the solvents used in 
PVC pipe cements can be 
considered eye irritants and 
contact with the eye should be 



avoided for it may cause eye 
injury. Proper eye protection 
and the use of chemical 
goggles or face shields is 
advisable where the possibility 
of splashing exists in handling 
solvent cements. In case of eye 
contact, flush with plenty of 
water for 15 minutes and call a 
physician immediately. 

X1 .2.6 Repeated contact with the skin 
should be avoided. Proper 
gloves impervious to and 
unaffected by the solvents 
should be worn when frequent 
contact with the skin is likely. 
Application of the solvents or 
solvent cements with rags and 
bare hands is not recom- 
mended. Brushes and other 
suitable applicators can be used 
effectively for applying the 
solvent cement, thus avoiding 
skin contact. In the event of 
excessive contact, remove 
contaminated clothing and wash 
skin with soap and water. 
CAUTION: Primers are toxic. 
Don't allow them to touch skin. 
Suitable gloves are advised. 

Step 1 . Cut pipe square with hand saw 
and miter box, mechanical cut- 
off saw or tube cutter designed 
for plastic. 

Step 2. Ream and chamfer pipe (to 
eliminate sharp edges, beads 
and all burrs). 

Step 3. Clean all dirt, moisture and 
grease from pipe and fitting 
socket. Use a clean, dry rag. 

Step 4. Check dry fit of pipe in fitting. 
Pipe should enter fitting socket 
from 1/3 to 3/4 depth of socket. 

Step 5. Soften inside socket surface by 
applying an aggressive primer. 

Step 6. Soften mating outside surface 
of pipe to depth of socket by 
applying a liberal coat of the 
(aggressive) primer. Be sure 
entire surface is softened. 

Step 7. Again coat inside socket 
surface with the (aggressive) 
primer. Then, without delay, 
apply solvent cement liberally 
to outside of pipe. Use more 
than enough to fill any gaps. 



257 



IS 8 



UNIFORM PLUMBING CODE 



Step 8. Apply a light coat of PVC solvent 
cement to inside of socket using 
straight outward strokes (to keep 
excess solvent out of socket). This 
is also to prevent solvent cement 
damage to pipe. For loose fits, 
apply a second coat of solvent 
cement. Time is important at this 
stage. See Section 31 6.1 .1 .4. 

Step 9. While both the inside socket 
surface and the outside surface 
of the pipe are SOFT and WET 
with solvent cement, forcefully 
bottom the pipe in the socket, 
giving the pipe a one-quarter 
turn, if possible. The pipe must 
go to the bottom of the socket. 

Step 10. Hold the joint together until 
tight. 

Step 1 1 . Wipe excess cement from the 
pipe. A properly made joint will 
normally show a bead around its 
entire perimeter. Any gaps may 
indicate insufficient cement or 
the use of light bodied cement 
on larger diameters where heavy 
bodied cement should have 
been used. 

Step 12. Do not disturb joint for the 
following periods: 
30 minutes minimum at 60°F to 
100 F(16°Cto38°C) 
1 hour minimum at 40°F to 



316.1.2 



705.1 



60°F(4°Cto16°C) 
2 hours minimum at 20°F to 
40°F (-7°C to 4°C) 
4 hours minimum at 0°F to 
20°F(-18°Cto-7°C) 
Handle the newly assembled 
joints carefully during these 
periods. If gaps (step 11) or 
loose fits are encountered in 
the system, double these 
periods. 
Step 13. The system shall not be 
pressurized until the joints have 
cured (set) at least as long as 
recommended by the 
manufacturer. If manufacturer's 
recommendation is not 
available the following cure 
times are required: 

Threaded Joints. Joints shall be 
tightened approximately 1/2 turn past 
hand tight, using a strap wrench. 
Caution: Handtight refers to number of 
threads to reach handtight with metal 
pipe. Pipe can be bottomed in small 
sizes of PVC by hand pressure alone. 
Do not overtighten. 

Elastomeric Gasketed Joints, 
Procedure: 

Step 1. For field cuts, cut end of pipe 
square with handsaw and miter 



MINIMUM CURE TIME, IN HOURS* 
TEST PRESSURE FOR PIPE 





Sizes 1/2" 
(12.7 mm) 


"to 1-1/4" 
(32 mm) 


Sizes 
(38 mm) 


1-1/2" to 3" 
(76 mm) 


Sizes 3-1/2" to 8" 
(89 mm) (203 mm) 


Temperature 

Range 

During 

Cure 

Period 


Up to 
180 psi 
(1240.2 

kPa) 


Above 180 

to 370 psi 

(1240.2 to 

2549.3 kPa) 


Up to 
180 psi 
(1240.2 

kPa) 


Above 180 

to 315 psi 

(1240.2 to 

2170.4 kPa) 


Up to 
180 psi 
(1240.2 

kPa) 


Above 180 

to 315 psi 

(1240.2 to 

2170.4 kPa) 


60°F-100°F 
(16°C-38°C) 


1 hr 


6hr 


2hr 


12 hr 


6hr 


24 hr 


40°F-60°F 
(4°C-16°C) 


2hr 


12 hr 


4hr 


24 hr 


12 hr 


48 hr 


10°F-40°F 
(-12°C+4°C) 


8hr 


48 hr 


16 hr 


96 hr 


48 hr 


8 days 



*lf gaps or loose fits are encountered in the system, double these cure times. 



258 



PVC COLD WATER BUILDING SUPPLY AND YARD PIPING 



IS 8 



604.0 
604.1 



609.0 
609.1 
609.1.1 



box, mechanical saw or a tube 
cutter designed for plastic. 

Step 2. Ream and bevel end of pipe 
(unless already done by 
manufacturer). 

Step 3. If dirty, remove gasket, clean gasket 
and groove and replace ring. 

Step 4. Mark pipe in a contrasting color 
to indicate the proper insertion 
depth as recommended by the 
manufacturer (unless already 
done by manufacturer). 

Step 5. Apply lubricant recommended 
by pipe manufacturer to end of 
pipe. Do not apply lubricant to 
gasket or the groove unless 
otherwise specifically recom- 
mended by the manufacturer. 

Step 6. Insert pipe into fitting until mark 
on pipe is even with fitting. 
Note: This depth of insertion is 
required to properly allow for 
thermal expansion and 
contraction. During joint 
assembly, the previously 
installed length of pipe should 
be held so that the existing 
joints are not pushed together 
or pulled apart. DO NOT USE 
METAL STRAPS, CHAINS (OR 
THE LIKE) FOR ASSEMBLY. 

Material 

Location. PVC piping shall be installed 
only outside the foundation of any 
building or structure or parts thereof. It 
shall be buried in the ground for its 
entire length except vertical piping may 
be extended above grade per Section 
313.4. It shall not be installed within or 
under any building or structure or mobile 
home or commercial coach or parts 
thereof. The term "building or structure 
or parts thereof shall include structures 
such as porches and steps, whether 
roofed or not, roofed porte-cocheres, 
roofed patios, carports, covered walks, 
covered driveways and similar 
structures or appurtenances. 

Installation, Testing and Identification 

Installation 

Deflection. Elastomeric gasketed pipe 

may be deflected in accordance with the 

manufacturer's recommendations provided 

that it shall not be permanently staked or 

blocked to maintain this deflection. 



609.1.2 Maximum Working Pressure. 

Maximum working pressure shall be as 
follows (see chart on following page). 

609.1.3 Saddles. PVC pressure pipe saddles 
are limited to underground use outside 
the building. The branch of the saddle 
shall be a minimum of two pipe sizes 
smaller than the main. Saddles shall be 
installed as required by their listings. 

609.1.4 Thrust Blocking. In lines with rubber 
gasketed joints, thrust blocks shall be 
installed at all: 

(a) Changes in direction, as at tees and 
bends 

(b) Changes in size, as at reducers 

(c) Stops, as at dead ends 

(d) Valves, where thrusts may be 
expected. 

Thrust block sizes shall be based on the 
maximum line pressure, pipe size and 
kind of soil. Refer to Table 609.1 .4(a) for 
thrust at fittings for a pressure of 100 psi 
(689 kPa). 

TABLE 609.1.4(a) 
THRUST AT FITTINGS IN POUNDS AT 100 psi 



Pipe Size 


! 90° 


45° 


22-1/2° 


Dead Ends 


Inches 


Bends 


Bends 


Bends 


and Tees 


1-1/2 


415 


225 


115 


295 


2 


645 


350 


180 


455 


2-1/2 


935 


510 


260 


660 


3 


1395 


755 


385 


985 


3-1/2 


1780 


962 


495 


1260 


4 


2295 


1245 


635 


1620 


5 


3500 


1900 


975 


2490 


6 


4950 


2710 


1385 


3550 


8 


8300 


4500 


2290 


5860 


10 


12,800 


6900 


3540 


9050 


12 


18,100 


9800 


5000 


12,800 



THRUST AT FITTINGS IN PASCALS AT 
689 kPa OF WATER PRESSURE 



•ipe Size 90° 


45° 


22-1/2° 


Dead Ends 


mm 


Bends 


Bends 


Bends 


and Tees 


38 


1846.8 


1001.3 


511.8 


1312.8 


51 


2870.3 


1557.5 


801.0 


2024.8 


64 


4160.8 


2269.5 


1157.0 


3937.0 


76 


6207.8 


3359.8 


1713.3 


4383.3 


89 


7921.0 


4280.9 


2202.8 


5607.0 


102 


10,212.8 


5540.3 


2815.8 


7209.0 


127 


15,575.0 


8455.0 


4338.8 


1 1 ,080.5 


152 


22,027.5 


12,059.5 


6163.3 


15,797.5 


203 


36,935.0 


20,025.0 


10,190.5 


26,077.0 


254 


56,960.0 


30,705.0 


15,753.0 


40,272.5 


305 


80,545.0 


43,610.0 


22,250.0 


56,960.0 



259 



IS 8 



UNIFORM PLUMBING CODE 



Example for Table 609.1 .4(a): 

For a pressure of 150 psi (1033.5 kPa) on 
a 4 inch (102 mm) tee, Table 609.1.4(a) 
indicates 1620 pounds (7209 N) for 100 
psi (689 kPa). Therefore, total thrust for 
150 psi (1033.5 kPa) will equal 1-1/2 



times 1620 pounds (7209 N) for a total 
thrust of 2430 pounds (10810 N). 
To determine the bearing area of thrust 
blocks, refer to Table 609.1.4(b) for the 
safe bearing load of the soil and divide 
the total thrust by this safe bearing load. 



Fittings 





I Schedule 


Sizes | 


Maximum 


Pipe 






Working Pressure 


160 psi (SDR 26) 


40 


1/2" thru 8" incl. 


160 psi- 1102.4 kPa 


(1102.4 kPa) 




(12.7 mm -203 mm) 






80 


1/2" thru 8" incl. 
(12.7 mm -203 mm) 


160 psi- 1102.4kPa 


200 psi (SDR 21) 


40 


1/2" thru 4" incl. 


200 psi- 1378 kPa 


(1378 kPa) 




(12.7 mm- 102 mm) 






80 


1/2" thru 8" incl. 
(12.7 mm -203 mm) 


200 psi- 1378 kPa 


250 psi (SDR 17) 


40 


1/2" thru 3" incl. 


250 psi- 1722.5 kPa 


(1722.5 kPa) 




(12.7 mm -76 mm) 






80 


1/2" thru 8" incl. 
(12.7 mm -203 mm) 


250 psi- 1722.5 kPa 


315 psi (SDR 13.5) 


40 


1/2" thru 1-1/2" incl. 


315 psi- 2170.4 kPa 


(2170.4 kPa) 




(12.7 mm -38 mm) 






80 


1/2" thru 4" incl. 
(12.7 mm- 102 mm) 


315 psi- 2170.4 kPa 


Schedule 40 


40 


1/2" thru 1-1/2" incl. 


320 psi - 2204.8 kPa 




80 


(12.7 mm -38 mm) 






40 


2" thru 4" incl. 


220 psi- 1515.8 kPa 




80 


(51 mm- 102 mm) 






40 


5" thru 8" incl. 
(127 mm -203 mm) 


160 psi- 1 102.4 kPa 


Schedule 80 


40 


1/2" thru 1-1/2" incl. 
(12.7 mm -38 mm) 


320 psi - 2204.8 kPa 




40 


2" thru 4" incl. 
(51mm- 102 mm) 


220 psi- 1515.8 kPa 




40 


5" thru 8" incl. 
(127 mm -203 mm) 


160 psi- 1102.4kPa 




80 


1/2" thru 4" incl. 
(12.7 mm- 102 mm) 


320 psi - 2204.8 kPa 




80 


5" thru 8" incl. 
(127 mm -203 mm) 


250 psi- 1722.5 kPa 



260 



PVC COLD WATER BUILDING SUPPLY AND YARD PIPING 



IS 8 



LOCATION OF THRUST BLOCKS 

(Standard and metric combined) 

A Comparison of Thrust-Block Areas 




261 



IS 8 



UNIFORM PLUMBING CODE 





4 sq. ft. 
(0.37 m 2 ) 



►-'-i : J 



6" Class 100 (152 mm) 



6 sq. ft. 
(0.56 m2) 




11 sq.ft. 
(1.02m2) 





— ^^BrMm H 


16 sq.ft. 


' "v5l 1 


^^^B 


(1.49m2) 




If ^B 




6" Class 150 (152 mm 


) 10" Class 150 (254 mm) 





262 



PVC COLD WATER BUILDING SUPPLY AND YARD PIPING 



IS 8 



TABLE 609.1.4(b) 
SAFE BEARING LOADS OF VARIOUS SOILS 





Safe Bearing Load 


Soil 


Lbs./sq. ft. 


kPa 


Mulch, Peat, etc. 








Soft Clay 


1000 


6890 


Sand 


2000 


13,780 


Sand and Gravel 


3000 


20,670 


Sand anf Gravel Cement 






with Clay 


4000 


27,360 


Hard Shale 


10,000 


68,900 



Example: Assume a 4000 pound (17,800 N) total 
thrust was computed. The soil condition 
is sand. The required bearing area of 
the thrust block is 4,000 lbs. (17,800 N) 
divided by 2000 lbs. (13,780 kPa) or 2 
square feet (0. 19 m 2 ). 

609.2 Testing 

609.2.1 Rubber Gasketed Joints. Properly 
sized thrust blocks, either permanent or 
temporary, shall be installed at all 
required points before testing. See 
Section 609.1.4. When concrete thrust 
blocks are installed, wait at least 24 
hours before pressure testing. 

609.2.2 Solvent Cement Joints. The entire 
system shall be purged before testing to 
eliminate all solvent cement vapors and 
air. 

CAUTION: Water test only. 

609.3 Identification. A label shall be 
fastened to the main electrical meter 
panel stating, "This structure has a 
nonmetallic water service". 



This standard is a combination of sections from the 
previous standards IS 8 and IS 14. IS 8 was 
originally adopted in 1968 and revised in 1971, 1972, 
1973 and 1975. IS 14 was originally adopted in 1972 
and revised in 1975. Upon adoption of this rewrite, IS 
14 was deleted. 

Rewrite ratified by membership: 1978 

Revised: 1980, 1981, 1984, 1986, 1989, 1991, 1992 

1 Appendix XI, Safety Requirements and Precautions from 
ASTM D2564-81a Solvent Cements for Poly (Vinyl Chloride) 
(PVC) Plastic Pipe and Fittings is reprinted with permission 
from the American Society for Testing and Materials, 1916 
Race Street, Philadelphia, PA 19103, copyright. 



610.0 Sizing 

610.1 Piping shall be sized in accordance with 
UPC Section 610.0. When UPC 
Appendix A is applicable, use UPC 
Chart A-5 (Fairly smooth). Flow velocity 
shall not exceed 8 fps (2.4 m/s). 



263 



UNIFORM PLUMBING CODE 



^> 



^ 



264 



Installation Standard 
For 
PVC BUILDING DRAIN, WASTE AND VENT PIPE AND FITTINGS 

IAPMO IS 9-95 



This installation standard shall apply to PVC 
building drain, waste and vent systems as governed 
by the Uniform Plumbing Code. Material Standard 
ASTM D2665-85a, "Standard Specification for Poly 
(Vinyl Chloride) (PVC) Plastic Drain, Waste and Vent 
Pipe and Fittings", shall form part of this installation 
standard. 

Installation, material and inspection shall comply 
with the current edition of the Uniform Plumbing 
Code published by the International Association of 
Plumbing and Mechanical Officials and shall also 
comply with this standard. 

Note: The Building Official shall be consulted about 
penetration of fire separations, height and area or 
other limitations. 

Note: The following sections of the Uniform 
Plumbing Code apply. 



316.2.3 Special Joints 
316.3.1 Flanged Fixture Connections 
31 6.4 Prohibited Joints and 

Connections 
31 7.0 Increasers and Reducers 
1101.3 Materials Uses 

ABBREVIATIONS 

ASTM American Society for Testing and Materials 
IAPMO International Association of Plumbing and 

Mechanical Officials 
UPC Uniform Plumbing Code 



301.1 Minimum Standards 

301.1.1 Pipe 

PVC pipe is furnished in straight lengths. 
The pipe is usually dark gray, ivory or white 
in color with identification markings as 
shown below. The pipe wall is the same 
thickness as that of Schedule 40 (IPS) 
standard steel pipe. 

Pipe shall be marked on two sides 180 
degrees apart or spirally in letters not less 
than 3/16 inch (4.8 mm) high in a contrasting 
color and shall contain at least the following 
at not more than 2 feet (610 mm) intervals: 

(a) Manufacturer's name or trademark; 

(b) Nominal pipe size; 

(c) Symbol PVC-DWV 2 ; 

(d) Products listed by IAPMO that are 
covered by this standard should be 
labeled with the designated IAPMO 
certification mark; and 

(e) Any other markings required or 
permitted by law. 

301.1.2 Fittings 
Fittings are usually furnished in dark gray, 
ivory or white with indelible markings as 
shown below. Refer to Tables in ASTM 
D2665-94 and D331 1-92 for dimensions and 
tolerances for pipe, fittings, sockets and 
laying lengths. 

Fittings shall be marked on the body or hub 
on both sides. The markings shall consist of 
at least the following: 
(a) Manufacturer's name or trademark; 

Although referenced in this standard, some of the fittings shown in the standard are not acceptable under the Uniform Plumbina 
Code. y 

2 It is common practice to dual mark Schedule 40 DWV and potable water piping in which compliance with each applicable 
standard is met. 



202.0 


Definition PVC 


Table 14-1 


Pipe and Fittings 




ASTM D2665-94 D21 22-90 




ASTMD3311-92 1 


301.1 


Minimum Standards 


704.4.1 and 704.4.3 


Closet Flanges 


707.1 


Cleanout Fittings 


311.8 


Screwed Fittings 


310.0 


Workmanship 


311.0 


Prohibited Fittings and 




Practices 


101.4.1.1 


Repair and Alterations 


313.0 


Protection of Piping, Materials 




and Structures 


314.0 


Hangers and Supports 




(Vertical Piping) 


314.0 


Hangers and Supports 




(Horizontal Piping) 


103.5 


Inspection 


103.5.3 


Testing 


701.0 


Materials (Drainage) 


903.1 and 903.3 


Materials (Venting) 


903.4 


Straining or Bending Pipe 


1003.0 


Traps Described 


316.1.1 


Threaded Joints 


316.1.5 


Type of Joints - Solvent 




Cement Plastic Pipe Joints 



265 



IS 9 



UNIFORM PLUMBING CODE 



(b) Symbol PVC-DWV; 

(c) Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark; and 

(d) Any other markings required or 
permitted by law 

301.1.3 Solvent Cement 

Solvent cement shall be as specified in 
ASTM Standard D2564-80. 
Solvent cement labels shall contain at least 
the following: 

(a) Manufacturer's or supplier's name and 
address, trade name, trademark or both; 

(b) Cement for PVC (pipe and fittings); 

(c) ASTM designation D2564; 

(d) Lot number; 

(e) Recommended procedure for use and 
safety precautions; 

(f) Cement type according to viscosity and 
pipe size; 

(g) End use application; 

(h) Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark; and 

(i) Any other markings required or 
permitted by law. 
301.1.3.1 Solvent cements shall not be purple in 

color. 

301.1.4 Primers 

Primer shall be as specified in ASTM 

F656-93. 

Primer containers shall be marked with at 

least the following: 

(a) Manufacturers or suppliers name and 
address, trademark or trade name; 

(b) ASTM F656; 

(c) Function of primer; 

(d) Procedure or instructions for 
application and use; 

(e) Lot number; 

(f) Primer intended for use with potable 
water shall show compliance to NSF; 
and 

(g) Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark. 

301.1.4.1 Primer shall be purple. 

310.0 Workmanship 

310.1 Alignment 

All piping systems components shall be 
aligned properly without strain. Pipe shall 
not be bent or pulled into position. 



Vertical piping shall be maintained in 
straight alignment between floors with 
midstory guides. 

Pipe and fittings shall be so positioned 
that identifying markings shall be readily 
visible for inspection. 

313.0 Protection of Piping 

313.1 Storage 

Pipe and fittings should not be stored in 
direct sunlight; however, exposure to 
sunlight during normal construction 
periods is not considered harmful. Pipe 
shall be stored in such a manner as to 
prevent sagging or bending. 

313.2 Expansion and Contraction 
Thermal expansion and contraction of 
plastic drain waste and vent systems shall 
be taken into consideration. Thermal 
expansion and contraction may be 
controlled by several methods: offset, 
expansion joints or restraints. 
Regardless of method utilized, certain 
conditions shall be met. 

(a) Support, but do not rigidly restrain 
piping at changes of direction. 

(b) Do not anchor pipe rigidly in walls. 

(c) Holes through framing members must 
be adequately sized to allow for free 
movement. 

DWV installation with frequent changes in 
direction will compensate for thermal 
expansion and contraction. 
Expansion joints may be utilized in vertical 
straight runs in excess of 30 feet (9144 mm) 
provided they are installed per 
manufacturer's installation instructions. 
Except piping buried below ground, 
horizontal and vertical piping should be 
installed with restraint fittings or a minimum 
of 24 inches (610 mm) 45° offset every 30 
feet (9144 mm). Thermal expansion for 
installation subject to temperature changes 
may be determined from Table 3-1. The 
linear expansion shown is independent of 
the diameter of the pipe. 

313.3 Exposed Piping 

Piping shall not be exposed to direct 
sunlight. Exception: Vent piping through 
roof. Plumbing vents through roof, exposed 
to sunlight, shall be protected by water base 
synthetic latex paints. 

Adequate support shall be provided where 
PVC piping is exposed to wind, snow and 
ice loading. 



266 



PVC BUILDING DWV PIPE AND FITTINGS 



IS 9 



TABLE 3-1 

PVC-DWV TYPE I 

THERMAL EXPANSION TABLE 

Chart Shows Length Change in Inches 

vs. Degrees Temperature Change 

Coefficient of Linear Expansion: e = 2.9 x 10" 5 in/in °F 



Length 
















(feet) 


40°F 


50"F 


60°F 


70°F 


80°F 


90°F 


100°F 


20 


0.278 


0.348 


0.418 


0.487 


0.557 


0.626 


0.696 


40 


0.557 


0.696 


0.835 


0.974 


1.114 


1.235 


1.392 


60 


0.835 


1.044 


1.253 


1.462 


1.670 


1.879 


2.088 


80 


1.134 


1.392 


1.670 


1.949 


2.227 


2.506 


2.784 


100 


1.392 


1.740 


2.088 


2.436 


2.784 


3.132 


3.480 



TABLE 3-1 

PVC-DWV TYPE I 

THERMAL EXPANSION TABLE (Metric) 

Chart Shows Length Change in Millimeters 
vs. Degrees Temperature Change 

0-2 mm 



Length 
(mm) 


4°C 


Coefficient of Linear Expansion: mm 
10°C 16°C 21 °C 27°C 


°C 
32°C 


38°C 


6096 


7.1 


8.8 


10.6 


12.4 


14.2 


15.9 


17.7 


12192 


14.2 


17.7 


21.2 


24.7 


28.3 


31.4 


35.4 


18288 


21.2 


26.5 


31.8 


37.1 


42.4 


47.7 


53.0 


24384 


28.8 


35.4 


42.4 


49.5 


56.6 


63.7 


70.7 


30480 


35.4 


44.2 


53.0 


61.9 


70.7 


79.6 


88.4 


Example: 

Highest temperature expected 

Lowest temperature expected 




100°F(38°C) 
50°FM0°C> 







50°F(10°C) 
Length of run - 60 feet (18288 mm) from chart, read 1.044 inches (26.5 mm) 
linear expansion that must be provided for. 



313.4 Protection from Damage 

Piping passing through wood studs or plates 

shall be protected from puncture by 

minimum 1/16 inch (1.6 mm) thick steel 

plate. 

Piping shall be protected from concrete form 

oil. 

313.5 Anti-Freeze Protection 

PVC pipe and traps can be protected from 
freezing by the use of one of the following 
solutions of mixtures: 

(a) 4 quarts (3.8 liters) of water mixed with 
5 quarts (4.8 liters) of glycerol 

(b) 2-1/2 lbs. (1.1 kg) of magnesium 
chloride dissolved in one (1) gallon (3.8 
liters) of water 

(c) 3 lbs. (1.4 kg) of table salt dissolved in 



one (1) gallon (3.8 liters) of water. 
The salt solutions are effective to 
approximately 10°F (-12°C). If lower 
temperatures are anticipated, the pipe 
should be drained or the glycerol solution 
should be used. 
313.6 Piping Installed In Fire Resistive 
Construction 

Where piping is installed and penetrates 
required fire resistive construction, the fire 
resistive integrity of the construction shall be 
as required by the Administrative Authority, 
or when not established by the building 
code, by qualified testing methods approved 
by the Administrative Authority. Approval 
shall be obtained prior to installing any such 
piping. 



267 



IS 9 



UNIFORM PLUMBING CODE 



314.0 Hangers and Supports 

314.1 Abrasion 

Hangers and straps shall not compress, 
distort, cut or abrade the piping and shall 
allow free movement of pipe. Pipe, exposed 
to damage by sharp surfaces, shall be 
protected. 

314.2 Support 

Support all horizontal piping at intervals of 
not more than four (4) feet (1219 mm), at 
end of branches, and at change of direction 
or elevation. Supports shall allow free 
movement, but shall restrict upward 
movement of lateral runs so as not to create 
reverse grade. Vertical piping shall be 
supported at each story or floor level. 
Alignment of vertical piping shall be 
maintained between floors with the use of a 
mid-story guide. Support trap arms in 
excess of three (3) feet (915 mm) in length 
as close as possible to the trap. Closet 
flanges shall be securely fastened with 
corrosive resistant fasteners to the floor with 
top surface one-quarter (1/4) inch (6.4 mm) 
above finish floor. 

1003.0 Traps 

1 003.1 Connection to Metal Traps 

Traps shall be connected by means of listed 
threaded trap adapters. 

705.1 Joints 
705.1.1 Caulked Joints 

Make connections or transitions to bell-and- 
spigot cast iron soil pipe fittings, and to bell- 
and-spigot pipe and fittings of other 
materials with listed mechanical 
compression joints designed for this use, or 
caulked joints made in an approved manner. 
In caulking, pack the joint with oakum or 
hemp and fill with molten lead to a depth of 
not less than one (1) inch (25.4 mm). Allow 
a period of four (4) minutes for cooling, 
following which, caulk the lead at the inside 
and outside edges of the joint. Lead shall 
not be overheated. 

31 6.1 Solvent Cement Joints 

(Additional information is available in ASTM 
D2855.) 

316.1.1 Selection. Follow manufacturer's recom- 
mendations for type of solvent cement for 
such conditions as temperature over 100°F 
(38°C), or humidity over 60%. 

316.1.2 Handling (to maintain effectiveness). 
Solvent cement and primer containers no 



larger than 1 quart (1 liter) should be used in 
the field (to avoid thickening due to 
evaporation). Keep containers closed and in 
the shade when not in use. Keep applicator 
submerged in solvent cement between 
applications. When solvent cement becomes 
thicker, THROW IT AWAY. Solvent cement 
shall NOT be thinned. 

316.1.3 Size of Applicator. Applicator should be 
about one-half the pipe diameter. Do not use 
smalt applicator on large pipes. Ordinary 
pure bristle paint brushes or applicators 
furnished with product are satisfactory. 

316.1.4 Primers. A listed primer in compliance with 
ASTM F 656-93 shall be used on all PVC 
DWV joints. 

316.1.5 Application. Solvent cement and primer 
shall be applied deliberately, but without 
delay (two men may be needed to make 
large joints). Use special care when 
temperature is over 100°F (38°C) or 
humidity is over 60%. 

316.1.6 Procedure. | 
XI. SAFETY REQUIREMENTS AND 

PRECAUTIONS 

XI.1 General. Solvents contained in 
PVC plastic pipe cements are 
classified as airborne contaminants 
and flammable and combustible 
liquids. Precautions listed in this 
appendix should be followed to 
avoid injury to personnel and the 
hazard of fire. 

XI.2 Safety Precautions: 

Xl.2.1 Prolonged breathing of solvent 
vapors should be avoided. When 
pipe and fittings are being joined in 
partially enclosed areas, a 
ventilating device should be used in 
such a manner to minimize the 
entry of vapors into the breathing 
areas. 

Xl.2.2 Solvent cements should be kept 
away from all sources of ignition, 
heat, sparks and open flame. 

Xl.2.3 Containers for solvent cements 
should be kept tightly closed except 
when the cement is being used. 

Xl.2.4 All rags and other materials used 
for mopping up spills should be kept 
in a safety waste receptacle which 
should be emptied daily. 

Xl.2.5 Most of the solvents used in PVC 
pipe cements can be considered 
eye irritants and contact with the 
eye should be avoided for it may 



268 



PVC BUILDING DWV PIPE AND FITTINGS 



IS 9 



cause eye injury. Proper eye 
protection and the use of chemicai 
goggles or face shields is advisable 
where the possibility of splashing 
exists in handling solvent cements. 
In case of eye contact, flush with 
plenty of water for 15 minutes and 
call a physician immediately 
Xl.2.6 Repeated contact with the skin 
should be avoided. Proper gloves 
impervious to and unaffected by the 
solvents should be worn when 
frequent contact with the skin is 
likely. Application of the solvents or 
solvent cements with rags and bare 
hand is not recommended. Brushes 
and other suitable applicators can 
be used effectively for applying the 
solvent cement, thus avoiding skin 
contact. In the event of excessive 
contact, remove contaminated 
clothing and wash skin with soap 
and water. 

Step 1 Cut pipe square with hand saw and 
miter box, mechanical cut-off saw 
or tube cutter designed for plastic. 

Step 2 Ream inside and chamfer outside 
of pipe (to eliminate all burrs). 

Step 3 Clean all dirt, moisture and grease 
from pipe and socket. Use a clean, 
dry rag. 

Step 4 Check dry fit of pipe in fitting. Pipe 
should enter fitting socket from 1/3 
to 3/4 depth of socket. 

StepS Soften inside socket surface by 
applying an aggressive primer. 

Step 6 Soften mating outside surface of 
pipe to depth of socket by applying 
a liberal coat of the (aggressive) 
primer. Be sure the entire surface is 
softened. 

Step 7 Again coat inside socket surface 
with the (aggressive) primer. Then, 
without delay, apply solvent cement 
liberally to outside of pipe. Use 
more than enough to fill any gaps. 

Step 8 Apply a light coat of PVC solvent 
cement to inside of socket using 
straight outward strokes (to keep 
excess solvent out of socket). This 
is also to prevent solvent cement 
damage to pipe. For loosefits, 
apply a second coat of solvent 
cement. Time is important at this 
stage. See Section 316.1.4. 



Step 9 While both the inside socket 
surface and the outside surface of 
the pipe are SOFT and WET with 
solvent cement, forcefully bottom 
the pipe in the socket, giving the 
pipe a one-quarter turn, if possible. 
The pipe must go to the bottom of 
the socket. 
Step 10 Hold the joint together until tight. 

(Partial set). 
Step 1 1 Wipe excess cement from the pipe. 
A properly made joint will normally 
show a bead around its entire 
perimeter. Any gaps may indicate 
insufficient cement or the use of 
light bodied cement on larger 
diameters where heavy bodied 
cement should have been used. 
Step 12 The system shall not be tested until 
the joints have cured (set) at least 
as long as recommended by the 
manufacturer. 
316.1.7 Threaded Joints 

Listed adapter fittings shall be used for the 
transition to threaded connections. No 
threaded PVC female fitting(s) or joint(s) 
shall be located in a non-accessible location. 
The joint between the PVC pipe and adapter 
fittings shall be of the solvent cement type. 
Only listed thread tape or thread lubricant, 
specifically intended for use with plastics, 
shall be used. Conventional pipe thread 
compounds, putty, linseed oil base products 
and unknown mixtures shall not be used. 
Pipe and fittings which have come in contact 
with the above non-approved mixtures shall 
be removed and replaced with new materials. 
Where a threaded joint is made, obtain 
tightness by maximum hand tightening plus 
additional tightening with a strapwrench not 
to exceed one full turn. 
316.2 Special Joints 
316.2.1 Connection to Non-Plastic Pipe 

When connecting plastic pipe to other types 
of piping, use listed fittings and adapters 
designed for the specific use intended. 

316.4 Prohibited Fittings and Connections 

(a) Drainage System - Any fitting or 
connection which has an enlargement, 
chamber or recess with a ledge, 
shoulder or reduction of pipe area, that 
offers an obstruction to flow through the 
drain is prohibited. 

(b) No fitting or connection that offers 
abnormal obstruction to flow shall be 



269 



IS 9 



UNIFORM PLUMBING CODE 



used. The enlargement of a three (3) 
inch (76 mm) closet bend or stub to four 
(4) inches (102 mm) shall not be 
considered an obstruction. 



ADOPTED: 1968 

REVISED: 1971, 1974, 1975, 1976, 1977, 1981, 

1982, 1983, 1987, 1989, 1990, 1991, 

1992 



270 



Installation Standard 

For 

ABS SEWER PIPE AND FITTINGS 

IAPMO IS 11-87 



This Installation Standard shall apply to ABS 
Building Sewer Pipe and Fittings as governed by the 
Uniform Plumbing Code. Material Standard ASTM 
D2751-83a, Standard Specification for ABS Sewer 
Pipe and Fittings shall form part of this Installation 
Standard. Materials shall be limited to building sewers 
receiving domestic sewage excluding special and 
industrial waste. 

Note: The following sections of the Uniform 
Plumbing Code apply. 



202.0 


Definition ABS 


202.0 


Domestic Sewage 


Table 14-1 


ASTMD27511 


301.1 


Minimum Standards 


310.0 


Workmanship 


312.0 


Independent Systems 


101.4.1.1.2 


Repairs and Alterations 


313.3 and 313.4 


Protection of Piping, Materials, 




and Structures 


314.0 


Hangers and Supports 


315.0 


Trenching, Excavation, and 




Backfill 


103.5 


Inspection and Testing 


723.0 


Building Sewer Test 


705.1.1 


Caulked Joints 


316.1.5 


Types of Joint 


705.1.7 


Elastomeric Gasketed and 




Rubber-Ring Joints 


317.0 


Increasers/Reducers 


713.0 


Sewer Required 


715.0 


Building Sewer Materials 


718.0 


Grade, Support, and Protection 




of Building Sewers 


719.0 


Cleanouts 


720.0 


Sewer and Water Pipes 



1 Although this standard is referenced in Table 14-1, some of 
the tube or fittings shown in the standard are not acceptable for 
use under the Uniform Plumbing Code. 

301 .1 Minimum Standards 
301.1.1 Pipe 

ABS pipe is furnished in straight lengths. 

Refer to Tables in D2751-93a for 

dimensions and tolerances for pipe and pipe 

sockets. 

Pipe shall be marked on two sides 180° apart 

or spirally in letters not less than 1/4 inch (6.4 

mm) high in a contrasting color and shall 



contain at least the following at no more that 5 
foot (1524 mm) intervals: 

(a) Manufacturer's name or trademark and 
code; 

(b) Nominal pipe size; 

(c) The legend "ABS Sewer Pipe." 

(d) ASTM Designation D 2751 ; 

(e) Pipe SDR number; 

(f) Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark; 

(g) Any other marking required or permitted 
by law; and 

(h) Coextruded pipe shall be marked coex. 

301.1.2 Fittings 

Refer to Tables in ASTM D2751-93a for 
dimensions and tolerances for fitting 
sockets, spigots and laying lengths. Fittings 
shall be marked on the body or hub. The 
markings shall consist of at least the 
following: 

(a) Manufacturer's name or trademark; 

(b) Nominal size; 
The material designation "ABS." 
ASTM Designation D 2751 ; 
Products listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark; and 
Any other markings required or 
permitted by law. 

301.1.3 Solvent Cement 

Solvent cement shall be as specified in 
ASTM Standard D2235-93a. 
Solvent cement labels shall contain at least 
the following: 

(a) Manufacturer's name or trademark; 

(b) Cement for ABS (Pipe and Fittings); 
ASTM designation D 2235; 
Recommended procedure for use and 
safety precautions; 

Products listed by IAPMO that are 
covered by this Standard shall be 
labeled with the designated IAPMO 
certification mark; and 
Any other marking required or 
permitted by law. 



(c) 
(d) 
(e) 



(f) 



(c) 
(d) 

(e) 



(f) 



271 



IS 11 



UNIFORM PLUMBING CODE 



310.0 Workmanship 

310.1 Alignment 

All piping system components shall be 
aligned properly without strain. Pipe shall 
not be bent or pulled into position after 
being solvent cemented. Pipe and fittings 
shall be so positioned that identifying 
markings shall be readily visible for 
inspection. 

313.0 Protection of Piping 

313.1 Storage 

Pipe and fittings should not be stored for 
long periods in direct sunlight. However, 
exposure to direct sunlight during normal 
construction periods is not harmful. Pipe 
shall be stored in such a manner as to 
prevent sagging or bending. 

315.0 Trenching, Excavation, and Backfill 

315.1 Trenching 

The width of the trench at any point below 
the top of the pipe should not be greater 
than necessary to provide adequate room 
for joining the pipe and compacting the side 
fills. 

315.2 Alignment and Grade 

The pipe should be bedded true to line and 
grade, uniformly and continuously supported 
on firm, stable material. Blocking shall not 
be used to bring the pipe to grade. The 
bedding shall conform to Section 718.0 of 
the Uniform Plumbing Code. 
Backfill 

The backfill shall conform to Section 315.0 
of the Uniform Plumbing Code. 

Joints 
Caulked Joints 

Make connections or transitions to bell-and- 
spigot cast iron soil pipe and fittings, and to 
bell-and-spigot pipe and fittings of other 
materials with approved mechanical 
compression joints designed for this use, or 
caulked joints made in an approved manner. 
In caulking, pack the joint with oakum or 
hemp and fill with molten lead to a depth of 
not less than one (1) inch (25.4 mm). Allow 
a period of four (4) minutes for cooling, 
following which, caulk the lead at the inside 
and outside edges of the joint. Lead shall 
not be overheated. 

Note: Caulked joints should be avoided if 
possible. 
705.2 Gasket-Type Joints 

Pipe shall be cut square with saws or pipe 
cutters designed specifically for plastic pipe; 



315.3 



705.0 
705.1 



protect pipe and fittings from serrated 
holding devices and abrasion. 

1. Wipe the pipe spigot, rubber gasket, 
and inside of the socket clean of all dirt 
and moisture. 

2. Coat the socket and gasket evenly with 
a vegetable base paste lubricant. 

3. Slide the gasket on the spigot and 
against the backup ring and snap it to 
remove any twist. 

4. Force the spigot into the socket. Check 
that the joint is properly connected by 
using any thin feeler gauge that the 
gasket is not looped back over the 
backup ring. 

31 6.0 Solvent Cement Joints 

316.1 Selection. Solvent cement shall be 
recommended for ABS by the manufacturer. 
Follow manufacturer's recommendations for 
types of solvent cement for such conditions 
as temperature over 100°F (38°C), or 
humidity over 60%. 

316.1.1 Handling (to maintain effectiveness). 
Solvent cement containers no larger than 1 
quart (1 liter) should be used in the field (to 
avoid thickening due to evaporation). Keep 
container closed and in the shade when not 
in use. Keep applicator submerged in 
solvent cement between applications. 
When solvent cement becomes thicker, 
THROW IT AWAY. Solvent cement shall 
NOT be thinned. 

316.1.2 Size of Applicator. Applicator should be 
about one half the pipe diameter. Do not 
use small applicator on large pipes. 
Ordinary pure bristle paint brush or 
applicators furnished with product are 
satisfactory. 

316.1.3 Application. Solvent cement shall be 
applied deliberately, but without delay (two 
men may be needed to make large joints). 
Use special care when temperature is over 
100°F (38°C) or humidity is over 60%. 

316.1.4 Procedure 

X1 SAFETY REQUIREMENTS AND 

PRECAUTIONS 

X1.1 General. Solvents contained in 
ABS plastic pipe cements are 
classified as airborne contaminants 
and flammable and combustible 
liquids. Precautions listed in this 
appendix should be followed to 
avoid injury to personnel and the 
hazard of fire. 



272 



ABS SEWER PIPE AND FITTINGS 



IS 11 



X1.2 Safety Precautions: 

X1.2.1 Prolonged breathing of solvent 
vapors should be avoided. When 
pipe and fittings are being joined in 
partially enclosed areas, a 
ventilating device should be used in 
such a manner to minimize the 
entry of vapors into the breathing 
areas. 

X1.2.2 Solvent cements should be kept 
away from all sources of ignition, 
heat, sparks, and open flame. 

X1.2.3 Containers for solvent cements 
should be kept tightly closed except 
when the cement is being used. 

X1.2.4 All rags and other materials used for 
mopping up spills should be kept in 
a safety waste receptacle which 
should be emptied daily. 

X1.2.5 Most of the solvents used in ABS 
pipe cements can be considered 
eye irritants and contact with the 
eye should be avoided for it may 
cause eye injury. Proper eye 
protection and the use of chemical 
goggles or face shields is advisable 
where the possibility of splashing 
exists in handling solvent cements. 
In case of eye contact, flush with 
plenty of water for 15 minutes and 
call a physician immediately. 

X1.2.6 Repeated contact with the skin 
should be avoided. Proper gloves 
impervious to and unaffected by the 
solvents should be worn when 
frequent contact with the skin is 
likely. Application of the solvents or 
solvent cements with rags and bare 
hand is not recommended. Brushes 
and other suitable applicators can 
be used effectively for applying the 
solvent cement, thus avoiding skin 
contact. In the event of excessive 
contact, remove contaminated 
clothing and wash skin with soap 
and water. 

Step 1 Cut pipe square with hand saw and 
miter box, mechanical cut-off saw or 
tube cutter designed for plastic. 

Step 2 Ream inside and chamfer outside of 
pipe (to eliminate all burrs). 

Step 3 Clean all dirt, moisture, and grease 
from pipe and socket. Use a clean, 
dry rag. 

Step 4 Check dry fit of pipe in fitting. Pipe 
should enter fitting socket from 1/3 



to 3/4 depth of socket. 

Step 5 Apply a light coat of ABS solvent 
cement to inside of socket using 
straight outward strokes (to keep 
excess solvent out of socket). This 
is also to prevent solvent cement 
damage to pipe. For loose fits, 
apply a second coat of solvent 
cement. Time is important at this 
stage. See Section 316.1.3. 

Step 6 While both the inside socket surface 
and the outside surface of the pipe 
are SOFT and WET with solvent 
cement, forcefully bottom the pipe in 
the socket, giving the pipe a one- 
quarter turn, if possible. The pipe 
must go to the bottom of the socket. 

Step 7 Hold the joint together until tight 
(partial set). 

Step 8 Wipe excess cement from the pipe. 
A properly made joint will normally 
show a bead around its entire 
perimeter. Any gaps may indicate 
insufficient cement or the use of 
light bodied cement on larger 
diameters where heavy bodied 
cement should have been used. 

Step 9 The system shall not be tested until 
the joints have cured (set) at least 
as long as recommended by the 
manufacturer. 

316.2 Special Joints 

316.2.1 Connection to Non-Plastic Pipe 

When connecting plastic pipe to other types 
piping, use only approved types of fittings 
and adapters, designed for the specific 
transition intended. 



ADOPTED: 1976 
REVISED: 1981,1987 



273 



UNIFORM PLUMBING CODE 



~> 



~> 



274 



Installation Standard 

For 

POLYETHYLENE (PE) FOR GAS YARD PIPING 

IAPMO IS 12-93 



This standard shall govern the installation of 
polyethylene (PE) natural and liquified petroleum 
gas yard piping. Installation, material and inspection 
shall comply with the current edition of the Uniform 
Plumbing Code published by the International 
Association of Plumbing and Mechanical Officials 
and shall also comply with this standard. 

Note: The following sections of the Uniform 
Plumbing Code apply to PE gas piping: 
202.0 Definition of PE 
Table 14-1 Materials: 

Pipe and Tube 
PE3406 PE3408 

ASTMD2513-94a 
PE2306 PE2406 

Fittings: 

Copper Alloy ANSI B1 6.26-88 
PE2306, PE3408 

PE2406 PE3406 

ASTMD2513-94a 
310.0 Workmanship 
313.0 Protection of Piping, Materials and 

Structures 
314.0 Supporting in the Ground 
315.0 Backfilling 
31 6.2.3 Connection to Other Materials 
Chapter 12 Fuel Gas Piping 

1204.0 Testing 

1210.1 Location of PE 
1211.16 Tracer Wire 

1213.0 Liquified Petroleum Gas Facilities 

and Piping 
1 21 8.0 Definition of medium pressure gas 

Chapter 2 DEFINITIONS 

Chapter 14 

ANSI American National Standards Institute 
ASTM American Society for Testing and 

Materials 
IAPMO International Association of Plumbing 

and Mechanical Officials 
UPC Uniform Plumbing Code published by 

IAPMO 

301.1 Minimum Standards 

301.1.1 Materials. Pipe, tubing and fittings shall 

conform to the appropriate standards in 

Table 14-1 of the Uniform Plumbing Code. 

See note ahead of Chapter 2 of this 

standard. 



301.1.1.1 Pipe. PE pipe is plastic of 1/2 inch (12.7 
mm) or larger size. One-half inch (12.7 
mm) pipe shall be SDR 9. Pipe sizes less 
than 3 inches (76 mm) shall be SDR 1 1 . 
Pipes 3 inches (76 mm) and larger shall 
be SDR 11.5 or lower*. 

301.1.1.2 Tubing. PE tubing is plastic and shall be 
limited to the following: 

Tubing Size 
Inches (mm) SDR* 

1/4 (6.4) 6 

3/8 (9.5) 8 

1/2 (12.7) 7 

*Note: The lower the SDR number, the 
thicker the wall. 

301.1.1.3 Fittings. Heat fusion fittings shall be PE 
2306, PE 2406, PE 3408, PE 3406, or 
other listed materials. Mechanical 
connectors for PE pipe and tubing and for 
transition fittings shall be approved 
compression type couplings or other 
special listed joints. 

301.1.2 Markings 

301.1.2.1 Pipe and Tubing. Pipe and tubing shall 
be marked at intervals of not more than 2 
feet (610 mm) with at least the following: 

(a) Manufacturer's name or trademark; 

(b) ASTM D 2513; 

(c) Pipe or tubing size; 

(d) PE 3406, PE 2306, PE 2406 or PE 
3408; 

(e) "SDR" number*; 

(f) Gas; 

(g) Quality control identification markings; 
and 

(h) Pipe and tubing listed by IAPMO that 
is covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show 
conformance with this standard. 

301.1.2.2 Fittings. Fittings shall be marked with at 
least the following: 

(a) Manufacturer's name or trademark; 

(b) Size; 

(c) Material designation; and 

(d) Fittings listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this standard. 



275 



IS 12 



UNIFORM PLUMBING CODE 



301.1.3 



313.0 
313.1 



313.2 
313.2.1 



313.2.2 



315.0 
315.1 



316.3 
316.3.1 



316.3.2 



1204.0 
1204.1 



315.2 



Position of Markings. The identifying 316.0 

markings on pipe, tubing and fittings shall 

be visible for inspection without moving 316.1.1 

materials. 

Protection of Piping 

Storage. Unprotected pipe should not be 

stored in direct sunlight. The pipe shall be 316.2 

stored in a way to protect it from 

mechanical damage (slitting, puncturing, 

etc.). Exposure to sunlight during normal 

construction periods is not harmful. 

Thermal Expansion 

Snaking. The pipe and tubing shall be 

"snaked" in the trench bottom with enough 

slack to provide for thermal expansion and 

contraction before stabilizing. The normal 

slack created by residual coiling is generally 

sufficient for this purpose. If, however, the 

pipe has been allowed to straighten before 

it is placed in the trench, 6 inches (152 mm) 

per 100 feet (30480 mm) of pipe length 

shall be allowed for this purpose. 

Stabilizing. Pipe and tubing temperature 

shall be stabilized by one of the following 

methods: 

(a) Shade backfill. Leave all joints 
exposed so they can be examined 
during the pressure test. 

(b) Allow to stand overnight. 

Trenching and Backfill 

Trenching. Trenching bottoms shall be 

smooth and regular of either undisturbed 1210.0 

soil or a layer of compacted backfill so that 1210.1 

minimum settlement will take place. Pipe 

or tubing shall not be wedged or blocked. 

Voids shall be filled and compacted to 

level of trench bottom. The minimum 

cover shall be 18 inches (457 mm) below 

finish grade. 

Exceptions: 

(1) Tubing for gas lights shall be buried a 
minimum of 12 inches (305 mm) below 
finish grade where gas flow is restricted to 
10 cubic feet per hour (8 x lO-^nfi/s) at its 
source by a mechanical means or a fixed 
orifice. 

Note: Local climatic conditions may affect 
required burial depth. 

(2) Piping may terminate a maximum of 
one foot above ground when encased in a 

listed anodeless transition riser. 1 21 0.2 

Backfill. The pipe and tubing temperature 
shall be stabilized before backfilling. See 
Section 313.2.2. 



Types of Joints 

PE joints shall be made as follows: 
Heat Fusion Joints. Heat fusion joints 
shall be made according to the 
manufacturer's procedures using 
recommended heat times, temperature 
and joining pressures. 
Mechanical Joints. Mechanical joints 
shall be assembled in an approved 
manner with tools recommended by the 
fitting manufacturer. Mechanical joints 
shall be made with listed mechanical 
fittings. 

Special Joints 

Listed transition fittings or listed 
mechanical fittings shall be used when 
making joints between PE and steel or PE 
and copper. 

Transition fittings shall be installed outside 
of meter vaults with metallic piping 
extending into the vaults a sufficient 
distance to permit the use of backup 
wrenches. 



Inspections 

Temperature. Pipe temperatures shall be 
stabilized before testing. See Section 
313.2.2. 
1204.1.1 Piping shall be subjected to the pressure 
test required in Section 1204.0 of the 
Uniform Plumbing Code. 



Materials 

Location. PE pipe and tubing shall be 
installed only outside the foundation of any 
building or structure or parts thereof. It 
shall be buried in the ground for its entire 
length with cover as provided in Section 
315.1. It shall not be installed within or 
under any building or structure or mobile 
home or commercial coach or parts 
thereof. The term "building or structure or 
parts thereof shall include structures such 
as porches and steps, whether covered or 
uncovered, roofed porte-cocheres, roofed 
patios, carports, covered walks, covered 
driveways and similar structures or 
appurtenances. 

Exception: Tubing may extend into gas 
light support columns provided it is not 
exposed to external damage. 
Maximum Working Pressure. Gas 
pressure shall not be more than 5 psi 
(34.5 kPa) for natural gas nor more than 
10 psi (69 kPa) for liquified petroleum gas. 



276 



PE FOR GAS YARD PIPING 



IS 12 



1210.3 



1211.0 
1211.1 

1211.2 



1211.3 



Gas Supplier. Installation shall be 
acceptable to the serving gas supplier. 

Installation of Gas Piping 

Types of Joints. See Sections 316.0 and 

316.3 of this standard. 

Prohibited Joints. PE pipe shall not be 

joined by a threaded joints. Joints made 

with adhesives or solvent cement shall be 

prohibited. 

Identification. Plastic gas yard piping 

shall be permanently identified by 

attaching a metal tag to the meter end of 

the piping system stating, "Plastic Yard 

Piping". 



1217.0 Sizing 

1217.1 Pipe. Pipe shall be sized as required by 
Section 1 21 7.0 or 1 21 8.0 of the UPC. 

1217.2 Tubing. Tubing shall be sized from Table 
1217.2. 



ADOPTED: 1971 

REVISED: 1975, 1977, 1978, 1981,1983, 1985, 
1989,1990,1991,1993 



TABLE 1217.2 
SIZE OF PLASTIC GAS TUBING 

Maximum Delivery Capacity in Cubic Feet of Gas per Hour (CFH) 
of Tubing Carrying Natural Gas of 0.60 Specific Gravity 



Nominal 
Tubing 

Size 
Inches 

1/4 
3/8 



Internal 

Diameter 

Inches 

0.250 
0.375 



Length in Feet 

10 20 30 40 50 60 70 80 90 100 125 

18 12 10 8 7 7 6 6 5 5 4 

51 35 28 24 21 19 18 16 16 15 13 



150 200 250 300 350 400 450 500 550 600 

1/4 0.250 43 33322222 

3/8 0.375 12 10 98 77666 6 



TABLE 1217.2 (Metric) 
SIZE OF PLASTIC GAS TUBING 

Maximum Delivery Capacity in Cubic Meters of Gas per Second (m 3 /s) 
of Tubing Carrying Natural Gas of 0.60 Specific Gravity 
Nominal 



Tubing 


Internal 














Size 


Diameter 






Length in 


Meters 






mm 


mm 


3.0 


6.1 


9.1 


12.2 


15.2 


18.3 


6.4 


6.4 


1.4 


1.0 


0.8 


0.6 


0.56 


0.56 


9.5 


9.5 


4.1 


2.8 


2.2 


1.9 


1.7 


1.5 






21.3 


24.4 


27.4 


30.5 


38.1 


45.7 


6.4 


6.4 


0.5 


0.5 


0.4 


0.4 


0.3 


0.3 


9.5 


9.5 


1.4 


1.3 


1.2 


1.2 


1.0 


0.96 






61.0 


76.2 


91.4 


106.7 


121.9 


137.2 


6.4 


6.4 


0.2 


0.2 


0.2 


0.2 


0.16 


0.16 


9.5 


9.5 


0.8 
152.4 


0.7 
167.6 


0.6 
182.9 


0.56 


0.56 


0.5 


6.4 


6.4 


0.16 


0.16 


0.16 








9.5 


9.5 


0.5 


0.5 


0.5 









277 



UNIFORM PLUMBING CODE 



^> 



~> 



278 



Installation Standard 

For 

PROTECTIVELY COATED PIPE 

IAPMO IS 13-91 



Installation and material of protective pipe 
coatings shall comply with this Standard and the 
current edition of the Uniform Plumbing Code, 
published by the International Association of 
Plumbing and Mechanical Officials (IAPMO). 

Note: The following sections of the Uniform Plumbing 
Code shall apply to protectively coated pipe. 

301 .1 Marking and labeling 

302.0 Wrought iron and steel pipe sizing 

310.0 Workmanship 

31 1 .0 Prohibited fittings and practices 

313.5 Protection required 

314.0 Burial of piping 

604.0 Materials - water piping 

609.3.1 Coated protection required 

1 21 0.0 Materials - gas piping 

1 21 1 .5 Coated protection required 

1 21 1 .6 Coating material approval required 

301.1 Minimum Standards 

301.1.1 Materials 

301.1.1.1 Coating. Piping shall be coated by an 
IAPMO listed coating applicator in 
accordance with Material and Property 
Standard PS 22-84, published by IAPMO. 

301.1.1.2 Tape. Tape for field application shall 
comply with PS-37-90, Black Plastic PVC or 
PE Pressure-Sensitive Corrosion 
Preventive Tape. 

301.1.1.3 Primer. Primer for field application shall 
be compatible with the tape and be as 
recommended by the tape manufacturer. 

301.1.2 Markings 

301.1.2.1 Pipe. Protectively coated pipe shall be 
legibly marked at least every two (2) feet 
(610 mm) as follows: 
(a) Applicator's name or trademark; 

Pipe manufacturer's name; 

Pipe Standard designation i.e., ASTM 

or API; 

Pipe material type i.e., Black, 

Galvanized; 

Pipe size and schedule; 

Coating material; 

Holiday test voltage; 

Products listed by IAPMO that are 

covered by this Standard shall be 

labeled with the designated IAPMO 

certification mark; and 

Any other required markings. 



(b) 
(c) 

(d) 

(e) 
(f) 
(9) 
(h) 



(i) 



301.1.2.2 Tape. Tape for field applications should 
be legibly marked at least every two (2) 
feet (610 mm) with the manufacturer's 
name and tape model identification. 

313.0 Protection of Piping and Fittings 

313.1 Field Joints. Field joints shall be made 
as follows, except as specified in 313.2. 
Clean and dry surfaces to be protected. 
Step 1 Oil and grease, if present, shall 

be removed with suitable non-oily 
type solvent such as Heptane or 
Trichlorethylene. Materials, such 
as kerosene and gasoline, shall 
not be used. 

Step 2 For coated pipe, remove coating 
approximately 3 inches (76 mm) 
from end of pipe or from repair 
area and bevel to expose 
shoulder of coating at area to be 
field wrapped. 

Step 3 For taped pipe, remove tape and 
overwrapping so as to expose 
approximately 3 inches (76 mm) 
of pipe at area to be field 
wrapped. 

Step 4 For welded pipe, grind down 
sharp welds and weld spatter to a 
minimum 1/8 inch (3.2 mm) 
radius. Wire brush the weld area 
thoroughly taking care to remove 
as much mil scale and surface 
rust as possible. Remove any 
loose or charred coating caused 
during welding. 

Step5 Apply listed primer, as 
recommended by the 

manufacturer of the tape being 
applied, over the protected area 
and adjacent 1 inch (25.4 mm) of 
protected area. 

Step 6 Spirally wrap listed tape by a half 
overlap double wrap of minimum 
10 mil tape stretched around the 
fitting, thread and other 
unprotected areas to provide a 
minimum 40 mil thickness. A 
maximum of two (2) inch (51 mm) 
wide tape shall be used for field 
application. 



279 



IS 13 



UNIFORM PLUMBING CODE 



Exception: Unless otherwise 
listed by IAPMO, a maximum of 
one (1) inch (25.4 mm) wide tape 
shall be used on change of 
direction fittings for piping sizes 
up to and including two (2) inch 
(51 mm). 

313.2 Other Methods. Other materials 
approved for field joints or repair shall be 
applied as per manufacturer's 
recommendations and the IAPMO listing 
requirements. 

313.3 Damage in Shipment. Coated piping 
shall be protected against damage in 
shipment. 

313.4 Handling and Storage. Coated piping 
shall be handled and stored in a manner 
to prevent damage. 

313.5 Handling by Installer. Movement of pipe 
from truck or into trench shall be done in 
such a manner as to avoid abrasion, or 
damage from dropping. 

315.0 Backfill. All excavations shall be 
completely backfilled as soon after 
inspection as possible. 

1211.7 Inspection. All coated piping shall be 
inspected and tested and any visible void, 
damage or imperfection to the pipe 
coating shall be repaired as to comply with 
Section 313.0. 

1211.7.1 Equipment. The equipment, material, 
and labor necessary for inspection or tests 
shall be furnished by the person to whom 
the permit is issued or by whom inspection 
is requested. 



ADOPTED: 1971 

REVISED: 1975, 1978, 1982, 1984, 1991 



280 



Installation Standard 

For 

ASBESTOS CEMENT PRESSURE PIPE FOR WATER SERVICE AND YARD PIPING 

IAPMO IS 15-82 



This standard shall govern the installation of 
asbestos cement pressure pipe and fittings with 
elastomeric gasketed joints in hot and cold water 
building supply and yard piping. For allowable 
location and pressure, see Sections 604.1 and 
609.1.2 of this standard. Installation, material, and 
inspection shall comply with the current edition of the 
Uniform Plumbing Code published by the 
International Association of Plumbing and Mechanical 
Officials, and shall also comply with this standard. 

Note: The following sections of the Uniform 
Plumbing Code apply to asbestos cement pressure 
piping systems. 



Table 14-1 


Materials 


310.0 


Workmanship 


313.0 


Protection of Piping, Materials 




and Structures 


314.0 


Supporting in the Ground 


315.0 


Backfilling 


Chapter 6 


Water Distribution 


Chapter 2 DEFINITIONS 


202.0 AC 


Asbestos Cement 


Chapter 14 ASTM 


American Society for Testing 




and Materials 


IAPMO 


International Association of 




Plumbing and Mechanical 




Officials 


UPC 


Uniform Plumbing Code 




published by IAPMO 



301.1 Minimum Standards 

301.1.1 Material. Materials shall conform to the 
appropriate standard in Table 14-1 of the 
Uniform Plumbing Code. 

Applicable Standards 
AC Pipe ASTM C296-93 
Fittings AWWA/ANSI A21 .1 0-93 
Rings ASTM D1 869-94 
Joints AWWA/ANSI A21 .1 1 -93 

301.1.1.1 Pipe. Pipe is asbestos cement. 

301.1.1.2 Fittings. Fittings are cast iron or other 
listed materials. 

301.1.2 Markings 

301.1.2.1 Pipe. Each uncut length of pipe shall be 
marked with at least the following: 

(a) Manufacturers name or trademark; 

(b) Size and Class; 

(c) Date of manufacture; 



(d) Test Pressure; and 

(e) Pipe listed by IAPMO that is covered 
by this standard shall be labeled with 
the designated IAPMO certification 
mark to show compliance with this 
Standard. 

301.1.2.2 Fittings. Fittings should be marked with 
at least the following: 

(a) Initials of makers name; 

(b) Year of casting; 

(c) Nominal Diameter; and 

(d) Weight and Class. 

301.1.2.3 Couplings. Couplings shall be marked 
with at least the following: 

(a) Manufacturers name or trademark; 

(b) Class and nominal size; and 

(c) Letter "T". 

301.1.3 Position of Markings. The identifying 
markings on pipe and fittings shall be 
visible for inspection without moving 
materials unless otherwise acceptable to 
the Administrative Authority. 

315.0 Trenching, Cover, and Backfill 

315.1 Trenching and Cover. Trench bottoms 
shall be uniformly graded and shall be of 
either undisturbed soil or shall consist of a 
layer or layers of compacted backfill so 
that minimum settlement will take place. 
The trench bottoms shall be at least 12 
inches (305 mm) below the average local 
frost depth. The minimum cover shall be 
18 inches (458 mm) below the finish 
grade. 

315.2 Backfill. After finishing pressure testing 
of the line, backfill a minimum of twelve 
(12) inches (305 mm) deep over the top of 
the pipe and fittings. Backfill should be 
select material placed around the pipe in a 
manner to provide a firm continuous 
support. Tamp well to secure proper 
compaction. 

Note: All joints shall be exposed during 
test 

705.0 Joints 

705.1 Joints in asbestos cement pipe shall be a 
sleeve coupling of the same composition 
as the pipe, or of other listed materials, 
and sealed with rubber rings or joined by 
other listed compression type coupling. 



281 



IS 15 
705.1.1 



705.2 



705.2.1 



705.2.2 



705.3 



604.0 
604.1 



609.0 
609.1 
609.1.1 



Joints between asbestos cement pipe and 
other approved pipes shall be made by 
means of listed adapter couplings. 
Special heat resistant rings as 
recommended by the manufacturer must 
be used for temperatures in excess of 
140°F(60°C). 

Before assembling the joint, the coupling 
grooves, pipe ends, and rubber gasket 
must be cleaned. The rubber gaskets are 
then positioned in the grooves. 
Use the pipe manufacturer's joint lubricant 
recommended for potable water 
application. Apply lubricant to the 
machined end of the pipe only, never to 
the rubber gasket or groove, unless 
specifically recommended otherwise by 
the manufacturer. 

The end of the pipe and the coupling or 
fitting bell shall be assembled using a bar 
and wood block or a pipe puller. 
"Stabbing" or "popping" the pipe into the 
coupling (pipe is suspended and swung 
into the bell) is not recommended. 
When a field cut is made, cut the pipe 
square, using hand pipe-cutters which use 
a cutting edge, or hand saws. To properly 
enter the rubber gasketed joint, the end of 
the pipe must be machined before 
insertion, using hand machining tools. 

Materials 

Location. Asbestos cement piping shall 
be installed only outside the foundation of 
any building or structure or parts thereof. 
It shall be buried in the ground for its 
entire length except vertical piping may be 
extended above grade per Section 313.0 
of the Uniform Plumbing Code. It shall not 
be installed within or under any building or 
structure or mobile home or commercial 
coach or parts thereof. The term "building 
or structure or parts thereof" shall include 
structures such as porches and steps, 
roofed porte-cocheres, roofed patios, 
carports, covered walks, covered 
driveways, and similar structures or 
appurtenances. 

Installation, Testing, and Identification 
Installation 

Alignment and Deflection. Pipe and 
fittings shall be aligned properly without 
strain. Pipe may be deflected in 
accordance with the manufacturer's 
recommendations provided that it shall not 
be permanently staked or blocked to 



609.1.2 



UNIFORM PLUMBING CODE 

maintain this deflection. If soft soil 
conditions exist, deflected joints may be 
permanently blocked or staked to maintain 
the deflection. The amount of deflection 
shall be: 5° for sizes 4 inch (101.6 mm) 
through 12 inch (305 mm); 4° for 14 inch 
(356 mm) and 16 inch (407 mm); 3-1/2° 
for 18 inch (457 mm) through 24 inch (610 
mm) for pipe belled on the job site. For 
factory-belled couplings, one half (1/2) the 
above deflections by size shall be allowed. 
Working Pressure. Maximum working 
pressure shall be as follows: 



MATERIALS, SIZES AND MAXIMUM WORKING 
PRESSURES 



Pipe 
Class 100 



Class 150 



Class 200 



Sizes 



Maximum Pressure 



4- 


24 inch incl. 


100 psi 


(102- 


-610mmincl.) 


(689 kPa) 


4 - 


- 24 inch incl. 


150 psi 


(102 


-610 mm incl.) 


(1033 kPa) 


4- 


■ 24 inch incl. 


200 psi 


(102- 


-610 mm incl.) 


(1378 kPa) 



609.1.3 



609.1.4 



609.1.5 



609.1.6 

609.2 
609.2.1 



Laterals and Saddles. Installation of 

laterals, saddles, or tapped couplings in 

AC piping shall be as required by their 

listings. 

Thrust Blocking. Thrust blocks shall be 

installed at: 

(a) Changes in direction, as at tees and 
bends; 

(b) Changes in size, as at reducers; 

(c) Stops, as at dead ends; and 

(d) Valves, where thrusts may be 
expected. 

The size and type of thrust block shall be 
based on the pressure rating of the pipe 
(or line test pressure, if greater than 
piping rating), pipe size and kind of soil 
609.1.4(b). Refer to Table 609.1.4(a) for 
thrust at fittings for a pressure of one 
hundred (100) pounds per square inch 
(689 kPa). 

To determine the bearing area of thrust 
blocks, refer to Table 609.1.4(b) for the 
safe bearing load of the soil and divide the 
total thrust by this safe bearing load. 
Thrust blocks shall be located as shown 
on Chart 609.1.4(c). 
Testing 

The portion of the line being tested should 
be complete with thrust blocks or properly 
sized temporary thrust blocking. The line 
may be pressure tested immediately after 
installation, provided however, that if 
poured concrete thrust blocks have been 



282 



ASBESTOS CEMENT PRESSURE PIPE FOR 
WATER SERVICE AND YARD PIPING 

utilized, they have had a 24-hour period to 
attain an initial cure. 

609.2.2 The entire system shall be filled with 
water, purged of air, and tested at a 
pressure at least equal to the eventual 
operating pressure for at least one (1) 
hour before inspection and backfilling of 
trench. It is recommended that the test 
pressure not exceed the working pressure 
of the pipe. 

CAUTION: AIR TESTING IS 
PROHIBITED. 

609.2.3 Identification. A label shall be fastened 



IS 15 

to the main electrical meter panel stating, 
"This structure has a non-metallic water 
service." 

610.0 Sizing. Piping shall be sized in 
accordance with UPC Section 610.0. 
When UPC Appendix A is applicable, 
Chart A-5 (Fairly Smooth Pipe) may be 
used. Flow velocities shall be limited to a 
maximum of 8 fps (2.4 m/s). When using 
UPC, Table 6-3, required by UPC Section 
610.0, velocities shall also be checked 
and limited using UPC Chart A-5. 



TABLE 609.1 .4 (a) 
Thrust at Fittings in Pounds at 100 psi of Water Pressure 



Pipe 
Size 


Class 


Dead Ends 
and Tees 


90° Bend 


45° Bend 


22 1/2° Bend 


4" 


100 
150 
200 


1,720 
1,850 
1,850 


2,440 
2,610 
2,610 


1,320 
1,420 
1,420 


660 
720 
720 


6" 


100 
150 
200 


3,800 
3,800 
3,800 


5,370 
5,370 
5,370 


2,910 
2,910 
2,910 


1,470 
1,470 
1,470 


8" 


100 
150 
200 


6,580 
6,580 
6,580 


9,300 
9,300 
9,300 


5,040 
5,040 
5,040 


2,550 
2,550 
2,550 


10" 


100 
150 
200 


9,380 
10,750 
10,750 


13,270 
15,200 
15,200 


7,190 
8,240 
8,240 


3,640 
4,170 
4,170 


12" 


100 
150 
200 


13,330 
15,310 
15,310 


18,860 
21,640 
21 ,640 


10,240 
11,720 
1 1 ,720 


5,170 
5,940 
5,940 


14" 


100 
150 
200 


17,930 
20,770 
20,770 


23,360 
29,360 
29,360 


13,740 
15,910 
15,910 


6,960 
8,060 
8,060 


16" 


100 
150 
200 


23,210 
26,880 
26,880 


32,820 
38,010 
38,010 


17,880 
20,590 
20,590 


9,000 
10,430 
10,430 


18" 


100 
150 
200 


31,000 
34,400 
38,600 


44,200 
48,500 
54,400 


23,850 
26,400 
29,650 


1 1 ,950 
13,400 
14,900 


20" 


100 
150 
200 


38,400 
42,600 
47,800 


54,200 
60,000 
67,400 


29,500 
32,600 
36,700 


14,700 
16,500 
18,600 


24" 


100 
150 
200 


55,000 
61,500 
69,000 


78,000 
86,700 
97,200 


42,200 
47,200 
52,900 


21,100 
23,900 
26,800 



283 



,S 1 5 UNIFORM PLUMBING CODE 

TABLE 609.1 .4 (a) (Metric) 
Thrust at Fittings in Newtons at 689 kPa of Water Pressure 



Pipe 




Dead Ends 








Size 


Class 


and Tees 


90° Bend 


45° Bend 


22 1/2° Be 


102 


100 


7654 


10,858 


5874 


2937 




150 


8232.5 


11,614.5 


6319 


3204 




200 


8232.5 


11,614.5 


6319 


3204 


152 


100 


16,910 


23,896.5 


12,949.5 


6541.5 




150 


16,910 


23,896.5 


12,949.5 


6541.5 




200 


16,910 


23,896.5 


12,949.5 


6541.5 


203 


100 


29,281 


41,385 


22,428 


11,347.5 




150 


29,281 


41,385 


22,428 


1 1 ,347.5 




200 


29,281 


41 ,385 


22,428 


11,347.5 


254 


100 


41,741 


59,051.5 


31 ,995.5 


16,198 




150 


47,837.5 


67,640 


36,668 


18,556.5 




200 


47,837.5 


67,640 


36,668 


18,556.5 


305 


100 


59,318.5 


83,927 


45,568 


23,006.5 




150 


68,129.5 


96,298 


52,154 


26,433 




200 


68,129.5 


96,298 


52,154 


26,433 


356 


100 


79,788.5 


103,952 


61,143 


30,973 




150 


92,426.5 


130,652 


70,799.5 


35,867 




200 


92,426.5 


130,652 


70,799.5 


35,867 


406 


100 


103,284.5 


146,049 


79,566 


40,050 




150 


119,616 


169,144.5 


91,625.5 


46,413.5 




200 


119,616 


169,144.5 


91 ,625.5 


46,413.5 


457 


100 


137,950 


196,690 


106,132.5 


53,177.5 




150 


153,080 


215,825 


117,480 


59,630 




200 


171,770 


242,080 


131,942.5 


66,305 


508 


100 


170,880 


241,190 


131,275 


65,415 




150 


189,570 


267,000 


145,070 


73,425 




200 


212,710 


299,930 


163,315 


82,770 


610 


100 


244,750 


347,100 


187,790 


93,895 




150 


273,675 


385,815 


210,040 


106,355 




200 


307,050 


432,540 


235,405 


119,260 



284 



ASBESTOS CEMENT PRESSURE PIPE FOR 
WATER SERVICE AND YARD PIPING 

Example: For a pressure of 150 psi (1033.5 kPa) on 
a 4 inch (102 mm) tee, Table 609.1.4(a) indicates 
1850 pounds (8232.5 N) for 100 psi (689 kPa). 
Therefore, total thrust for 150 psi (1033.5 kPa) will 
equal 1-1/2 times 1850 pounds (82,32.5 N). 

TABLE 609.1 .4(b) 
Safe Bearing Loads for Various Soils 



Soil 

Mulch, Peat, etc. 

Soft Clay 

Sand 

Sand and Gravel 

Sand and Gravel 

Cemented w/Clay 
Hard Shale 



Safe Bearing Load 
LbsySq. Ft. (kPa) 



1000 6890 

2000 13,780 

3000 20,670 



IS 15 

Example: Assume a 4000 pound (17,800 N) total 
thrust was computed. The soil condition is sand. 
The required bearing area of the thrust block is 4000 
lbs. (17,800 N) divided by 2000 lbs. (13,780 kPa) or 
2 sq.ft. (0.19 m?) 



ADOPTED: 1975 
REVISED: 1981,1982 



4000 
10,000 



27,360 
68,900 



CHART 609.1.4(C) 




*»n fci !r< . i if 





= w\ 



6* Class 1 50 (1 52 mm) 1 0" Class 1 50 (254 mm) 



285 



UNIFORM PLUMBING CODE 



~> 



286 



Installation Standard 

For 

LOW PRESSURE AIR TEST FOR BUILDING SEWERS 

IAPMO IS 16-84 



This Installation Test Standard is for use with 
sewer piping materials as listed in Table 14-1, 
Chapter 14, current edition of the Uniform Plumbing 
Code, as published by the International Association 
of Plumbing and Mechanical Officials, hereinafter 
referred to as IAPMO. 

Note: The following section of the Uniform Plumbing 
Code applies to this test: 

723.0 Testing 

1. Purpose: 

1.1 This Standard defines procedures for testing 
sewer lines, using low pressure air to 
demonstrate the integrity of the installed 
material and the construction procedures. 
This recommended practice is for use in 
testing 3 inch (76 mm) through 12 inch (305 
mm) building sewer lines only. 

2. General Requirement: 

2.1 The section of the building sewer line to be 
tested is plugged. Air at low pressure is 
introduced into the plugged line. The 
calculated test time for the pressure to drop 
is measured. 



Procedure: 

Step 1 



Step 2 



Step 3 



Plug all pipe outlets to resist 
the test pressure. Give special 
attention to stoppers and 
laterals. 

Determine the test duration for 
the section under test from 
table provided. The pressure 
holding time is based on an 
average holding pressure of 3 
psi (21 kPa) gage or a drop 
from 3.5 psi (24 kPa) to 2.5 psi 
(17kPa)gage. 

Add air until the internal air 
pressure of the sewer line is 
raised to approximately 4.0 psi 
(28 kPa) gage. After an internal 
pressure of approximately 4.0 
psig (28 kPa) is obtained, allow 
time for the air pressure to 
stabilize. The pressure will 
normally show some drop until 



the temperature of the air in the 
test section stabilizes. 
Step 4 When the pressure has 
stabilized and is at or above the 
starting test pressure of 3.5 psi 
(24 kPa) gage, commence the 
test. Before starting the test, 
the pressure may be allowed to 
drop to 3.5 psig (24 kPa). 
Record this drop in pressure for 
the test period. If the pressure 
has dropped more than 1 .0 psi 
(7 kPa) gage during the test 
period, the line is presumed to 
have failed. The test may be 
discontinued when the 
prescribed test time has been 
completed even though the 1 .0 
psig (7 kPa) drop has not 
occurred. 

4. Safety: 

4.1 The air test may be dangerous if, 
because of lack of understanding or 
carelessness, a line is improperly 
prepared. It is extremely important that 
the various plugs be installed and 
braced to prevent blowouts. 



287 



IS 16 



UNIFORM PLUMBING CODE 



SAMPLE AIR TEST TABLE 

Minimum time, in seconds, for pressure to drop from 
3-1/2 (24 kPa) to 2-1/2 (17 kPa) PSI 



ft x 304.8 = mm 





3-4 in. 










Length of Line 


76.2- 


6 in. 


8 in. 


10 in. 


12 in. 


(feet) (m) 


101.6 mm 


152.4 mm 


203.2 mm 


254 mm 


304.8 mm 


25 


7.6 


30 


30 


30 


30 


30 


50 


15.2 


30 


30 


35 


55 


79 


75 


22.9 


30 


30 


53 


83 


119 


100 


30.5 


30 


40 


70 


110 


158 


125 


38.1 


30 


50 


88 


138 


198 


150 


45.7 


30 


59 


106 


165 


238 


175 


53.3 


31 


69 


123 


193 


277 


200 


61 


35 


79 


141 


220 


317 


225 


68.6 


40 


89 


158 


248 


340 


250 


76.2 


44 


99 


176 


275 


340 


275 


83.8 


48 


109 


194 


283 


340 


300 


91.4 


53 


119 


211 


283 


340 


325 


99.1 


57 


129 


227 


283 


340 


350 


106.7 


62 


139 


227 


283 


340 


375 


114.3 


66 


148 


227 


283 


340 


400 


121.9 


70 


158 


227 


283 


362 


450 


137.2 


79 


170 


227 


283 


407 


500 


152.4 


88 


170 


227 


314 


452 



288 



LOW PRESSURE AIR TEST FOR BUILDING SEWERS 



IS 16 



si 

if 



U. CM 
O <D 

H- = 

o * 

2 o 



till 

if 

U. (N 
O (O 

ib 

z o 
UJ . 







LENGTH OF MAIN LINE IN FEET (m) 




6" (152 mm) DIAMETER 












25 


50 


75 


100 


125 


150 


175 


200 


225 


250 


275 


300 


400 


500 






7.6 


15.2 


22.9 


30.5 


38.1 


45.7 


53.3 


61 


68.6 


76.2 


83.8 


91.4 


121.9 


152.4 


25 


7.6 


30 


24 


34 


44 


54 


64 


74 


84 


94 


103 


113 


123 


163 


168 


50 


15.2 


30 


29 


39 


46 


58 


68 


78 


88 


98 


108 


118 


128 


166 


167 


75 


22.9 


30 


33 


43 


53 


63 


73 


83 


92 


102 


112 


122 


132 


164 


165 


100 


30.5 


30 


37 


47 


57 


67 


77 


87 


97 


107 


117 


127 


136 


162 


163 


125 


38.1 


32 


42 


52 


62 


72 


81 


91 


101 


111 


121 


131 


141 


160 


162 


150 


45.7 


36 


46 


56 


66 


76 


86 


96 


106 


116 


125 


135 


145 


159 


161 


175 


53.3 


41 


51 


61 


70 


80 


90 


100 


110 


120 


130 


140 


150 


157 


159 


200 


61 


45 


55 


65 


75 


85 


95 


105 


114 


124 


134 


144 


153 


156 


158 


225 


68.6 


50 


59 


69 


79 


89 


99 


109 


119 


129 


139 


149 


151 


154 


157 


250 


76.2 


54 


64 


74 


84 


94 


103 


113 


123 


133 


143 


149 


150 


153 


156 


275 


83.8 


58 


68 


78 


88 


98 


108 


118 


128 


138 


146 


147 


149 


152 


155 


300 


91.4 


63 


73 


83 


92 


102 


112 


122 


132 


142 


145 


146 


147 


151 


154 


350 


106.7 


72 


81 


91 


101 


111 


121 


131 


140 


141 


143 


144 


145 


149 


152 


400 


121.9 


80 


90 


100 


110 


120 


130 


136 


138 


139 


141 


142 


143 


147 


150 


450 


137.2 


89 


99 


109 


119 


129 


132 


134 


136 


138 


139 


141 


142 


145 


149 


500 


152.4 


96 


108 


118 


126 


129 


131 


133 


135 


136 


138 


139 


140 


144 


147 



NO HOLDING TIME LESS THAN 30 SECONDS 







LENGTH OF MAIN LINE IN FEET (m) 




8" (203 mm) DIAMETER 












25 


50 


75 100 


125 


150 


175 


200 


225 


250 


275 


300 


400 


500 






7.6 


15.2 


22.9 ! 30.5 

t 


38.1 


45.7 


53.3 


61 


68.6 


76.2 


83.8 


914 


121.9 


152 4 


25 


7.6 


30 


40 


57 75 


92 


110 


128 


145 


163 


180 


198 


216 


223 


224 


50 


15.2 


30 


44 


62 


79 


97 


114 


132 


150 


167 


185 


202 


218 


220 


221 


75 


22.9 


31 


48 


66 


84 


101 


119 


136 


154 


172 


189 


207 


214 


217 


219 


100 


30.5 


35 


53 


70 


88 


106 


123 


141 


158 


176 


194 


209 


211 


214 


216 


125 


38.1 


40 


57 


75 


92 


110 


128 


145 


163 


180 


198 


206 


207 


211 


214 


150 


45.7 


44 


62 


79 


97 


114 


132 


150 


167 


185 


201 


202 


204 


209 


212 


175 


53.3 


48 


66 


84 


101 


119 


136 


154 


172 


189 


197 


199 


201 


206 


210 


200 


61 


53 


70 


88 


106 


123 


141 


158 


176 


192 


194 


197 


199 


204 


208 


225 


68.6 


57 


75 


92 


110 


128 


145 


163 


180 


189 


192 


194 


196 


202 


206 


250 


76.2 


62 


79 


97 


114 


132 


150 


167 


183 


186 


189 


191 


193 


200 


204 


275 


83.8 


66 


84 


101 


119 


136 


154 


172 


181 


184 


187 


189 


191 


198 


202 


300 


91.4 


70 


88 


106 


123 


141 


158 


174 


178 


181 


184 


187 


189 


196 


200 


350 


106.7 


79 


97 


114 


132 


150 


166 


170 


174 


177 


180 


183 


185 


192 


197 


400 


121.9 


88 


106 


123 


141 


157 


162 


166 


170 


174 


176 


179 


181 


189 


194 


450 


137.2 


97 


114 


132 


148 


154 


159 


163 


167 


170 


173 


176 


178 


186 


191 


500 


152.4 


106 


123 


140 


146 


151 


156 


160 


164 


167 


170 


173 


175 


183 


189 



NO HOLDING TIME LESS THAN 30 SECONDS 



289 



IS 16 



UNIFORM PLUMBING CODE 



P E 



O m 



Oo 



2 







LENGTH OF MAIN LINE IN FEET (m) 




8" (203 mm) DIAMETER 












25 


50 


75 


100 


125 


150 


175 


200 


225 


250 


275 


300 


400 


500 






7.6 


15.2 


22.9 


30.5 


38.1 


45.7 


53.3 


61 


68.6 


76.2 


83.8 


91.4 


121.9 152.4 


25 


7.6 


30 


45 


63 


80 


98 


116 


133 


151 


168 


186 


204 


221 


224 


225 


50 


15.2 


37 


55 


73 


90 


108 


126 


143 


161 


178 


196 


214 


220 


222 


223 


75 


22.9 


47 


65 


83 


100 


118 


135 


153 


171 


188 


206 


217 


217 


220 


221 


100 


30.5 


57 


75 


93 


110 


128 


145 


163 


181 


198 


214 


214 


215 


218 


220 


125 


38.1 


67 


85 


102 


120 


138 


155 


173 


190 


208 


211 


212 


213 


216 


218 


150 


45.7 


77 


95 


112 


130 


148 


165 


182 


200 


207 


209 


210 


211 


214 


217 


175 


53.3 


87 


105 


122 


140 


157 


175 


192 


204 


206 


207 


208 


209 


214 


215 


200 


61 


97 


114 


132 


150 


167 


185 


201 


202 


204 


205 


206 


207 


211 


214 


225 


68.6 


107 


124 


142 


160 


177 


195 


199 


201 


203 


204 


205 


206 


210 


213 


250 


76.2 


117 


134 


152 


169 


187 


195 


198 


199 


201 


202 


203 


204 


209 


212 


275 


83.8 


127 


144 


162 


179 


192 


194 


196 


198 


200 


201 


202 


204 


208 


210 


300 


91.4 


136 


154 


172 


187 


190 


192 


195 


196 


198 


200 


201 


202 


207 


209 


350 


106.7 


156 


174 


181 


185 


187 


190 


193 


194 


196 


198 


199 


200 


205 


208 


400 


121.9 


173 


178 


181 


184 


186 


189 


191 


192 


194 


196 


197 


198 


203 


206 


450 


137.2 


173 


177 


180 


183 


185 


187 


189 


190 


192 


194 


195 


196 


201 


204 


500 


152.4 


173 


177 


180 


182 


184 


186 


188 


189 


191 


192 


193 


194 


200 


203 



NO HOLDING TIME LESS THAN 30 SECONDS 







LENGTH OF MAIN LINE IN FEET (m) 




10" (254 mm) DIAMETER 










25 


50 


75 


100 


125 


150 


175 


200 


225 


250 


275 


300 


400 


500 






7.6 


15.2 


22.9 


30.5 


38.1 


45.7 


53.3 


61 


68.6 


76.2 


83.8 


91.4 


121.9 152.4 


25 


7.6 


32 


59 


87 


114 


142 


169 


197 


224 


252 


277 


277 


278 


279 


280 


50 


15.2 


36 


64 


91 


119 


146 


174 


201 


229 


256 


271 


272 


273 


275 


277 


75 


22.9 


41 


68 


96 


123 


151 


178 


206 


233 


261 


265 


267 


268 


272 


274 


100 


30.5 


45 


73 


100 


128 


155 


183 


210 


238 


258 


260 


262 


264 


268 


271 


125 


38.1 


50 


77 


105 


132 


160 


187 


214 


242 


253 


255 


257 


259 


264 


268 


150 


45.7 


54 


81 


109 


136 


164 


191 


219 


244 


248 


251 


253 


255 


261 


265 


175 


53.3 


58 


86 


113 


141 


168 


196 


223 


239 


243 


246 


249 


251 


258 


262 


200 


61. 


63 


90 


118 


145 


173 


200 


228 


235 


239 


242 


245 


248 


255 


260 


225 


68.6 


67 


95 


122 


150 


177 


205 


226 


231 


235 


239 


242 


244 


252 


257 


250 


76.2 


72 


99 


127 


154 


182 


209 


222 


227 


231 


235 


238 


241 


249 


255 


275 


83.8 


76 


103 


131 


158 


186 


211 


218 


223 


228 


231 


235 


238 


247 


253 


300 


91.4 


80 


108 


135 


163 


190 


208 


214 


220 


224 


228 


232 


235 


244 


250 


350 


106.7 


89 


117 


144 


172 


194 


201 


208 


213 


218 


222 


226 


229 


239 


246 


400 


121.9 


98 


125 


153 


179 


188 


196 


202 


208 


213 


217 


221 


224 


235 


242 


450 


137.2 


107 


134 


162 


174 


183 


191 


197 


203 


208 


212 


216 


220 


230 


238 


500 


152.4 


116 


143 


160 


170 


179 


186 


193 


198 


203 


208 


212 


215 


226 


235 



NO HOLDING TIME LESS THAN 30 SECONDS 



290 



LOW PRESSURE AIR TEST FOR BUILDING SEWERS 



IS 16 



£5 

_j < 

£° 

PI 

<; e 



2 



fff 

- 1 CM 

o 

1 St 







LENGTH OF MAIN LINE IN FEET (m) 




10" 


(254 mm) DIAMETER 










25 


50 


75 


100 


125 


150 


175 


200 


225 


250 


275 


300 


400 


500 






7.6 


15.2 


22.9 


30.5 


38.1 


45.7 


53.3 


61 


68.6 


76.2 


83.8 


91.4 


121.9 152.4 


25 


7.6 


37 


65 


92 


120 


147 


175 


202 


230 


257 


277 


278 


278 


279 


280 


50 


15.2 


47 


75 


102 


130 


157 


185 


212 


240 


267 


271 


272 


273 


276 


277 


75 


22.9 


57 


85 


112 


140 


167 


195 


222 


250 


265 


266 


267 


269 


272 


274 


100 


30.5 


67 


95 


122 


150 


177 


205 


232 


257 


260 


262 


263 


265 


269 


271 


125 


38.1 


77 


105 


132 


160 


187 


215 


242 


253 


255 


257 


259 


261 


266 


269 


150 


45.7 


87 


114 


142 


169 


197 


224 


245 


248 


251 


254 


256 


257 


263 


266 


175 


53.3 


97 


124 


152 


179 


207 


234 


241 


245 


248 


250 


252 


254 


260 


264 


200 


61 


107 


134 


162 


189 


217 


233 


237 


241 


244 


247 


249 


251 


258 


262 


225 


68.6 


117 


144 


172 


199 


225 


230 


234 


238 


241 


244 


246 


248 


255 


260 


250 


76.2 


127 


154 


182 


209 


222 


227 


231 


235 


238 


241 


243 


246 


253 


258 


275 


83.8 


136 


164 


191 


213 


219 


224 


229 


232 


236 


238 


241 


243 


251 


256 


300 


91.4 


146 


174 


201 


211 


217 


222 


226 


230 


233 


236 


239 


241 


249 


254 


350 


106.7 


166 


192 


200 


207 


212 


217 


222 


226 


229 


232 


235 


237 


245 


250 


400 


121.9 


181 


190 


197 


203 


209 


214 


218 


222 


225 


228 


231 


233 


241 


247 


450 


137.2 


180 


188 


195 


201 


206 


211 


215 


218 


222 


225 


227 


230 


238 


244 


500 


152.4 


179 


186 


193 


198 


203 


208 


212 


215 


219 


222 


224 


227 


235 


241 



NO HOLDING TIME LESS THAN 30 SECONDS 







LENGTH OF MAIN LINE IN FEET (m) 




10" 


(254 mm) DIAMETER 










25 


50 


75 


100 


125 


150 


175 


200 


225 


250 


275 


300 


400 


500 






7.6 


15.2 


22.9 


30.5 


38.1 


45.7 


53.3 


61 


68.6 


76.2 


83.8 


91.4 


121.9 152.4 


25 


7.6 


45 


73 


100 


128 


155 


183 


210 


238 


265 


279 


280 


280 


281 


281 


50 


15.2 


63 


90 


118 


145 


173 


200 


228 


255 


275 


275 


276 


277 


278 


279 


75 


22.9 


80 


108 


135 


163 


190 


218 


245 


270 


272 


272 


273 


274 


276 


277 


100 


30.5 


98 


125 


153 


180 


208 


235 


263 


267 


268 


269 


270 


271 


274 


275 


125 


38.1 


116 


143 


171 


198 


226 


253 


263 


265 


266 


267 


268 


269 


272 


274 


150 


45.7 


133 


161 


188 


216 


243 


258 


260 


262 


264 


265 


266 


267 


270 


272 


175 


53.3 


151 


178 


206 


233 


254 


256 


258 


260 


262 


263 


264 


265 


268 


271 


200 


61 


168 


196 


223 


249 


252 


254 


256 


258 


260 


261 


262 


263 


267 


269 


225 


68.6 


186 


213 


241 


247 


250 


253 


255 


257 


258 


259 


261 


262 


265 


268 


250 


76.2 


204 


231 


242 


246 


249 


251 


253 


255 


256 


258 


259 


260 


264 


267 


275 


83.8 


221 


237 


241 


244 


247 


250 


252 


254 


255 


256 


258 


259 


263 


266 


300 


91.4 


232 


237 


240 


243 


246 


249 


251 


253 


254 


255 


256 


258 


262 


265 


350 


106.7 


232 


235 


239 


242 


244 


247 


249 


251 


252 


253 


254 


256 


260 


263 


400 


121.9 


231 


234 


238 


240 


243 


245 


247 


249 


250 


251 


253 


254 


258 


261 


450 


137.2 


230 


234 


237 


239 


241 


243 


245 


247 


248 


250 


251 


252 


256 


259 


500 


152.4 


230 


233 


236 


238 


240 


242 


244 


246 


247 


249 


250 


251 


255 


258 



NO HOLDING TIME LESS THAN 30 SECONDS 



291 



IS 16 



UNIFORM PLUMBING CODE 



^2 

5 E 
Oo 

z 



go 

CO &> 

2 







LENGTH OF MAIN LINE IN FEET (m) 


12" (305 mm) DIAMETER 










25 


50 


75 


100 


125 


150 


175 


200 


225 


250 


275 


300 


400 


500 






7.6 


15.2 


22.9 


30.5 


38.1 


45.7 


53.3 


61 


68.6 


76.2 


83.6 


91.4 


121.9 152.4 


25 


7.6 


44 


84 


123 


163 


202 


242 


282 


321 


332 


333 


334 


334 


336 


336 


50 


15.2 


48 


88 


126 


167 


207 


246 


286 


323 


324 


326 


327 


328 


331 


333 


75 


22.9 


53 


92 


132 


172 


211 


251 


290 


316 


317 


319 


321 


323 


327 


329 


100 


30.5 


57 


97 


136 


176 


216 


255 


295 


308 


311 


313 


316 


317 


323 


326 


125 


38.1 


62 


101 


141 


180 


220 


260 


297 


301 


304 


308 


310 


312 


319 


323 


150 


45.7 


66 


106 


145 


165 


224 


264 


290 


295 


299 


302 


305 


308 


315 


319 


175 


53.3 


70 


110 


150 


189 


229 


268 


283 


289 


293 


297 


300 


303 


311 


316 


200 


61 


75 


114 


154 


194 


233 


271 


277 


283 


288 


292 


296 


299 


308 


313 


225 


68.6 


79 


119 


158 


198 


238 


265 


272 


278 


283 


288 


291 


295 


304 


310 


250 


76.2 


84 


123 


163 


202 


242 


259 


267 


273 


278 


283 


287 


291 


301 


308 


275 


83.8 


88 


128 


167 


207 


244 


254 


262 


269 


274 


279 


283 


287 


298 


305 


300 


91.4 


92 


132 


172 


211 


239 


249 


257 


264 


270 


275 


279 


283 


295 


302 


350 


106.7 


101 


141 


180 


218 


231 


241 


249 


256 


262 


268 


272 


276 


289 


297 


400 


121.9 


110 


150 


189 


210 


223 


233 


242 


249 


255 


261 


266 


270 


283 


292 


450 


137.2 


119 


158 


189 


204 


216 


227 


235 


243 


249 


255 


260 


264 


278 


288 


500 


152.4 


128 


166 


184 


198 


210 


221 


229 


237 


243 


249 


254 


259 


273 


283 



NO HOLDING TIME LESS THAN 30 SECONDS 







LENGTH OF MAIN LINE IN FEET (m) 


12" (305 mm) DIAMETER 










25 


50 


75 


100 


125 


150 


175 


200 


225 


250 


275 


300 


400 


500 






7.6 


15.2 


22.9 


30.5 


38.1 


45.7 


53.3 


61 


68.6 


76.2 


83.8 


91.4 


121.9 152.4 


25 


7.6 


50 


89 


129 


168 


208 


248 


287 


327 


331 


332 


333 


333 


335 


336 


50 


15.2 


59 


99 


139 


178 


218 


257 


297 


321 


323 


325 


326 


327 


330 


332 


75 


22.9 


69 


109 


149 


188 


228 


267 


307 


314 


316 


318 


320 


321 


326 


328 


100 


30.5 


79 


119 


158 


198 


238 


277 


302 


306 


309 


312 


314 


316 


321 


325 


125 


38.1 


89 


129 


168 


208 


248 


287 


295 


300 


303 


306 


309 


311 


317 


321 


150 


45.7 


99 


139 


178 


218 


257 


284 


289 


294 


298 


301 


304 


306 


314 


318 


175 


53.3 


109 


149 


188 


228 


267 


278 


284 


289 


293 


296 


299 


302 


310 


315 


200 


61 


119 


158 


198 


238 


265 


272 


278 


284 


288 


292 


295 


298 


306 


312 


225 


68.6 


129 


168 


208 


248 


260 


268 


274 


279 


284 


288 


291 


294 


303 


309 


250 


76.2 


139 


178 


218 


246 


255 


263 


269 


275 


280 


284 


287 


290 


300 


306 


275 


83.8 


149 


188 


228 


242 


251 


259 


266 


271 


276 


280 


284 


287 


297 


304 


300 


91 4 


158 


198 


227 


238 


248 


255 


262 


268 


272 


277 


281 


264 


294 


301 


350 


1067 


178 


208 


221 


232 


241 


249 


255 


261 


266 


271 


274 


278 


289 


296 


400 


121.9 


189 


204 


217 


227 


236 


243 


250 


256 


261 


265 


269 


273 


284 


292 


450 


137.2 


187 


201 


213 


223 


231 


239 


245 


251 


256 


260 


264 


268 


279 


288 


500 


152.4 


186 


199 


210 


219 


227 


234 


240 


246 


251 


256 


260 


263 


275 


284 



NO HOLDING TIME LESS THAN 30 SECONDS 



ADOPTED: 


1976 


REVISED: 


1982 


REAFFIRMED: 


1984 



292 



Installation Standard 

For 

EXTRA STRENGTH VITRIFIED CLAY PIPE IN BUILDING DRAINS 

IAPMO IS 18-85 



This standard shall govern the installation of 
extra strength vitrified clay pipe in gravity building 
drains. (See Section 315.0 for allowable location.) 
Installation, material, and inspection shall comply 
with the current edition of the Uniform Plumbing 
Code published by the International Association of 
Plumbing and Mechanical Officials and this standard. 

Note: The following sections of the Uniform 
Plumbing Code apply to vitrified clay pipe. 



202.0 


Definitions, Building Drain 




Table 14-1 


Extra Strength 






Vitrified Clay Pipe 


301.1 




ASTM C700-91 






Fittings, Couplings, 






Molded Rubber ASTM C425-90a 




310.0 


Workmanship 




313.0 


Protection of Piping, Materials, and 
Structures Direct embedment in 
concrete or masonry 




314.0 


Supporting in the Ground 




315.0 


Backfill 




103.5 


Inspections 




103.5.3.2 


Test 




103.5.4.2 


Responsibility 




712.2 


Water Test 




712.3 


Air Test 




103.5.3.5 


Exceptions 




Chapter 7 


Drainage 


315.0 


701.1.3 


Location of piping and use in 


315.1 




pressurized drainage systems 


315.2 


316.1.4 


Joints 


705.3.1 


Use of Joints 





Chapter 2 DEFINITIONS 
Chapter 14 

ASTM American Society for Testing and 

Materials 
IAPMO International Association of Plumbing 

and Mechanical Officials 
UPC Uniform Plumbing Code published by 
IAPMO 

301.1 Minimum Standards 

301.1.1 Materials. Pipe and fittings shall be a 
minimum 3 inch (76 mm) in size, "Extra 
Strength" and couplings shall be molded 
rubber sewer couplings. They shall 
conform to the applicable standards in 
Table 14-1 of the UPC. 



301.1.2 Markings 

301.1.2.1 Pipe and Fittings. Each length of pipe 
and each fitting shall be marked with at 
least the following: 

(a) Manufacturer's name or initials; 

(b) "Extra Strength" or "ES"; 

(c) Location of the plant; and 

(d) Pipe and fittings listed by IAPMO that 
are covered by this Standard shall be 
labeled with the designated IAPMO 
certification mark to show compliance 
with this Standard. 

301.1.2.2 Couplings. Couplings assemblies shall 
be marked with at least the following: 

(a) Manufacturer's name or trademark on 
rubber couplings and take-up band or 
screw take-up housing; 

(b) Size, on rubber coupling; 

(c) Year of manufacture on rubber 
coupling; 

(d) Grade of material on take-up band or 
screw take-up housing; and 

(e) Couplings and components listed by 
IAPMO that are covered by this 
Standard shall be labeled with the 
designated IAPMO certification mark to 
show compliance with this Standard. 



Burial and Separation 
Burial. Pipe and fittings shall be buried 
12 inches (305 mm) minimum. 
Separation. Pipe and fittings shall not be 
run or laid in the same trench with water 
piping unless both the following 
conditions are met: 

(1) The bottom of the water pipe, at all 
points, shall be at least 12 inches 
(305 mm) above the top of the drain 
line, and 

(2) The water pipe shall be placed on a 
solid shelf excavated at one side of 
the common trench. 



316.0 Type of Joints 

Joints shall be made with couplings or 
with flexible compression factory 
fabricated joints. 



293 



IS 18 



UNIFORM PLUMBING CODE 



705.0 Use of Joints 

Transitions between clay and other 
materials shall be made with molded 
rubber sewer couplings and appropriate 
bushings or reducers. 



ADOPTED: 1980 
REVISED: 1982,1985 



294 



Installation Standard 
for 
CPVC SOLVENT CEMENTED HOT AND COLD WATER DISTRIBUTION SYSTEMS 

IAPMO IS 20-96 



This standard shall govern the installation of 
CPVC piping (IPS pipe and SDR-11 tubing) in 
potable hot and cold water distributing systems 
within buildings. (For allowable locations and 
pressure, see Sections 609.2 and 609.4.) 
Installation, material and inspection shall comply with 
the current edition of the UPC, published by the 
International Association of Plumbing and 
Mechanical Officials, and shall also comply with this 
standard. 

Note: The following sections of the Uniform 
Plumbing Code apply to CPVC IPS piping and SDR- 
1 1 tubing. 

Table 14-1 

Chlorinated Poly (Vinyl Chloride) (CPVC) 

Plastic Hot Water Distribution System 

ASTM D 2846-93 
Chlorinated Poly (Vinyl Chloride) (CPVC) 

Plastic Pipe, Schedules 40 and 80 

ASTM F 441 -94 
Socket Type Chlorinated Poly (Vinyl 

Chloride) (CPVC) Plastic Pipe Fittings 

Schedule 40 

ASTM F 438-93 
Socket Type Chlorinated Poly (Vinyl 

Chloride) (CPVC) Plastic Pipe Fittings 

Schedule 80 

ASTM F 439-93a 
Solvent Cements for Chlorinated Poly (Vinyl 

Chloride) (CPVC) Plastic Pipe and Fittings 

ASTM F 493-93a 



301.1 


Minimum Standards 


310.0 


Workmanship 


311.0 


Prohibited Fittings and Practices 


313.0 


Protection of Piping, Materials 




and Structures 


314.0 


Hangers and Supports 


103.5 


Inspections 


316.2.3 


Connection to other materials 


Chapter 6 


Water Distribution 



Chapter 2* DEFINITIONS 

202.0 CPVC Chlorinated Poly (Vinyl Chloride) 
Pipe or tubing "Pipe" or "Piping" includes both 
pipe and piping, unless specified 
as "IPS Pipe" or "tubing". 



Chapter 14 

ASTM American Society for Testing and 

Materials 
IAPMO International Association of Plumbing 

and Mechanical Officials 
NSF National Sanitation Foundation 
UPC Uniform Plumbing Code published by 

IAPMO 

'The first three numbers refer to the corresponding section of 
the UPC. 

301 .1 Minimum Standards 

301.1.1 Materials. Materials shall comply with 

the following: 

Materials ASTM 

Standard 

Raw Material-CPVC 23447-B D 1 784-95 

IPS Pipe 

Sch. 40 (1/2 in., 3/4 in. and 1 in.) F 441-89^ 

(12.7 mm, 19.1 mm, and 25.4 mm) 

Sch. 80 (1/2 in. -2 in.) F 441 -94 

(12.7 mm -51 mm) 

Tubing 

SDR 1 1 (1/2 in. thru 2 in.) D 2846-93 

(12.7 mm -51mm) 

Fittings 

Sch. 40 (1/2 in., 3/4 in. & 1 in.) F 438-93 

(12.7 mm, 19.1 mm, and 25.4 mm) 

Sch. 80 (1/2 in. -2 in.) F439-93a 

(12.7 mm -51mm) 

Tube Fittings (1 12 in. - 2 in.) D 2846-93 

(12.7 mm -51 mm) 

Primer. Listed primers shall be used 
that are compatible with the type of 
listed CPVC cement and pipe used. The 
primer shall be a true solvent for CPVC, 
containing no slow drying ingredient. 
Cleaners shall not be allowed to be 
used as a substitute or equivalent for a 
listed primer. 

Note: Manufacturer shall provide test 
data from an independent testing 
laboratory acceptable to IAPMO that their 
CPVC pipe, together with recommended 
fittings has a Short Term Working 
Pressure (STWP) and Temperature 
Rating of 150 psi (1030 kPa) at 210°F 
(99°C) for 48 hours or more. 



295 



IS 20 



UNIFORM PLUMBING CODE 



301.1.1.1 Material. Pipe and fittings are plastic 
and are usually light gray for IPS pipe 
and fittings, and tan for SDR 11 tubing 
and fittings. 

301.1.2 Markings 

301.1.2.1 Pipe and Tubing. IPS pipe and tubing 
shall be legibly marked at intervals of 
not more than 5 feet (1524 mm) with at 
least the following: 

(a) Manufacturer's name or trademark; 

(b) ASTM F441 (Sch. 40 and 80 pipe) 
or ASTM D2846 (SDR 11 tubing); 

(c) Size; 

(d) CPVC4120; 

(e) Schedule 40 or 80 (IPS pipe) or 
SDR 11 (tubing); 

(f) Pressure ratings at 73°F (23°C) 
(IPS pipe) or 100 psi (689 Kpa) at 
180°F (82°C) (SDR 11 tubing); 

(g) NSF seal or marking or other 
acceptable agency showing 
compliance to NSF 14 or NSF 61 ; 

(h) Manufacturer's production code 
marking; and 

(i) Pipe and tubing listed by IAPMO 
that is covered by this standard 
shall be labeled with the designated 
IAPMO certification mark to show 
compliance with this standard. 

301.1.2.2 Fittings. Fittings shall be marked with 
at least the following: 

(a) Manufacturer's name or trademark; 

(b) ASTM F438 (Sch. 40)or ASTM F439 
(Sch.80) or ASTM D 2846 (tubing); 

(c) CPVC; 

(d) NSF seal or marking of other 
acceptable agency showing 
compliance to NSF 14 or NSF 61 ; and 

(e) Fittings listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show 
compliance show compliance with 
this standard. 



Method of marking 
(5x Size) (4 Dots) 



fP 



0.015" -0.040" 

S* O^*— (°- 4 mm " 1 -0 mm ) 
f v -^\ Dia. dots (4) 
^ ^ equally spaced 

1/4" (6.4 mm) Dia. 



Suggested location 
of marking code 



w- 



U-3/ 16 »J 

(4.8 mm) 



Alternative Dot 
Profiles 1 0x Size 




Note: Standard number may be 
omitted on smaller fittings when marked 
thus with four raised dots. 

301 .1 .2.3 Solvent Cement 

301.1.2.3.1 Markings. Container labeling of CPVC 
solvent cement shall include at least the 
following: 

(a) Manufacturer's name or seller's 
name and address and tradename 
or trademark, or both; 

(b) "ASTM F 493"; 

(c) Cement for CPVC Pipe; 

(d) Pipe sizes, SDR's and schedules for 
which the cement is recommended; 

(e) Procedure or instructions for 
application and use; 

(f) Lot number of batch on container 
(not on closure or lid); 

(g) NSF seal or marking of other 
acceptable agency showing I 
compliance to NSF 1 4 or NSF 61 ; | 

(h) Potable water; 

(i) All safety warnings; 

(j) A listing of those and only those 
solvents contained in the cement; 
and 

(k) Solvent cement listed by IAPMO 
that is covered by this standard 
shall be labeled with the designated 
IAPMO certification mark to show 
compliance with this standard. 

301.1.2.3.2 Color. Solvent cements shall be 
colored orange. 

301.1.2.4 Markings 

301.1.2.4.1 Primer. Primer containers shall be 
marked with at least the following: 

(a) Manufacturer's name or trademark; 

(b) NSF seal or marking of other 
acceptable agency showing I 
compliance to NSF 14 or NSF 61 ; | 

(c) CPVC Primer; 

(d) Procedures or instructions for 
application and use; 

(e) A listing of those and only those 
solvents contained in the primer; and 

(f) Primers listed by IAPMO that are 
covered by this standard shall be 
labeled with the designated IAPMO 
certification mark to show 
compliance with this standard. 

301.1.2.4.2 Color. Primer shall be colored so as to 
make its use obvious on a finished joint, 
but shall not be colored orange or yellow. | 

301.1.3 Position of Markings. Identification 
markings shall be visible for inspection 
without moving materials. 



296 



CPVC SOLVENT CEMENTED HOT AND COLD 
WATER DISTRIBUTION SYSTEMS 

310.0 Alignment. Piping and fittings shall be 313.6 

aligned properly without strain. 

31 3.0 Protection of Materials 

313.1 Abrasion. Pipe or tubing passing 
through drilled or notched metal studs or 
joists or hollow shell masonry walls shall 
be protected from abrasion due to 
thermal expansion and contraction by 
elastomeric or plastic sleeves or 
grommets or other approved means. 
Straight runs may have protection at 
maximum 3 feet (915 mm) intervals. 313.7 

313.2 Puncture. Steel plate protection shall 313.7.1 
be installed when required by the 
Administrative Authority. 

313.3 Attic Opening. Piping closer than 6 
feet (1829 mm) to an attic opening shall 
be protected. 

313.4 Storage and Handling. Pipe shall be 
stored in a way to protect it from 
mechanical damage (slitting, puncturing, 
etc.). It shall be stored under cover to 

keep it clean and avoid long term 313.7.2 
exposure to sunlight. Exposure to 
sunlight during normal construction 
periods is not harmful. CPVC solvent 
cements should be stored in a cool 
place except when actually in use on 
the job site. The solvent cement 
manufacturer's specific storage 
instruction should be followed. 313.8 

313.5 Freezing. In areas where the system 
must be drained to protect it from 
freezing, horizontal lines shall be graded 
to drain. 



IS 20 

Overheating: 

(a) Tubing shall not be positioned 
closer than 6 inches (152 mm) to 
gas appliance vents, nor located in 
a confined space (such as a stud 
cavity) containing an appliance 
vent. Tubing and recessed light 
fixtures shall be separated by 12 
inches (305 mm). 

(b) Do not apply direct flame onto 
CPVC. 

Thermal Expansion 

General. Allowance for thermal 

expansion and contraction shall be 

provided by approved means. 

Allowance shall be based on an 

expansion rate of 3.5 inches (100 mm) 

per 100 feet (30,480 mm) of length of 

run per 100°F (38°C) temperature 

change. 

Note: Expansion rate is independent of 

the size of the pipe. 

Offsets and Loops. Thermal 

expansion may be provided for by use 

of expansion loops, offsets, or changes 

of direction. From Table 313.7.2 

determine the length "L" that is required. 

Note that "L" is based on length of run, 

diameter of pipe, and maximum 

temperature of water. 

Clearance. Adequate clearance shall 

be provided between piping and 

structure (such as bored holes and 

sleeves) to allow for free longitudinal 

movement. 



TABLE 313.7.2 
Developed Length M L n of Expansion Loops 

Length of Run in Feet (mm) 







20 


(6096) 


40 (12192) 


60 (18288) 


80 


(24384) 


100 


(30480) 


Nominal Size 


















Inches 


(mm) 






Loop Length 


"L" in Inches (mm) 








1/2 


(12.7) 


22 


(6706) 


31 (9449) 


38 (11582) 


44 


(13411) 


50 


(15240) 


3/4 


(19.1) 


26 


(7925) 


37 (11278) 


46 (14021) 


52 


(15850) 


58 


(17678) 


1 


(25.4) 


30 


(9144) 


42 (12802) 


52 (15850) 


60 


(18288) 


67 


(20422) 


1-1/4 


(32) 


33 


(10058) 


47 (14326) 


57 (17374) 


66 


(39917) 


74 


(22555) 


1-1/2 


(38) 


36 


(10973) 


51 (15545) 


62 (18898) 


72 


(21946) 


80 


(24384) 


2 


(51) 


41 


(12497) 


58 (17678) 


71 (21641) 


82 


(24994) 


91 


(27737) 



297 



IS 20 



UNIFORM PLUMBING CODE 



Example: Pipe Size - 1/2 inch (127 mm) Length of Run - 60 feet (18288 mm): (38") (965 mm) (from table). 



Support 
Guides 




60' (18288 mm) Run 

? * 



Offset 



L 
(38") 
(965 mm) 



Change in 
Direction 



314.0 
314.1 



314.2 



314.3 



316.1 
316.1.1 



I (a) 



I (b) 



Hangers and Supports 

Vertical Piping. Vertical piping shall be 

supported at each floor or as specified 

by the design engineer to allow for 

expansion/contraction. Piping shall 

have a mid-story guide. 

Horizontal Piping. Unless an 

engineered design is provided and 

approved by the Administrative 

Authority, the following provisions shall 

apply. Horizontal piping 1 inch (25.4 

mm) or smaller shall be supported at 

maximum 3 foot (914 mm) intervals. 

Piping 1-1/4 inch (32 mm) or larger shall 

be supported at maximum 4 foot (1219 

mm) intervals. 

Hangers and Anchors. Piping shall 

not be anchored rigidly to a support, but 

rather secured with smooth hangers or 

straps that provide for a degree of 

movement and that prevent damage to 

the pipe. Hangers or straps with sharp 

or abrasive edges shall not be used. 

Hangers that pinch the piping shall not 

be used. 

Solvent Cement Joints 

SAFETY REQUIREMENTS AND 

PRECAUTIONS 1 

General. Solvents contained in PVC 

plastic pipe cements are classified as 

airborne contaminants and flammable 

and combustible liquids. Precautions 

listed in this appendix should be 

followed to avoid injury to personnel and 

the hazard of fire. 

Prolonged breathing of solvent vapors 

should be avoided. When pipe and 

fittings are being joined in partially 



enclosed areas, a ventilating device 
should be used in such a manner to 
minimize the entry of vapors into the 
breathing areas. 

(c) Solvent cements should be kept away 
from all sources of ignition, heat, sparks 
and open flame. 

(d) Containers for solvent cements should 
be kept tightly closed except when the 
cement is being used. 

(e) All rags and other materials used for 
mopping up spills should be kept in a 
safety waste receptacle which should be 
emptied daily. 

(f) Most of the solvents used in PVC pipe 
cements can be considered eye irritants 
and contact with the eye should be 
avoided for it may cause eye injury. 
Proper eye protection and the use of 
chemical goggles or face shields is 
advisable where the possibility of 
splashing exists in handling solvent 
cements. In case of eye contact, flush 
with plenty of water for 15 minutes and 
call a physician immediately. 

(g) Repeated contact with the skin should be 
avoided. Proper gloves impervious to 
and unaffected by the solvents should be 
worn when frequent contact with the skin 
is likely. Application of the solvents or 
solvent cements with rags and bare 
hands is not recommended. Brushes 
and other suitable applicators can be 
used effectively for applying the solvent 
cement, thus avoiding skin contact. In 
the event of excessive contact, remove 
contaminated clothing and wash skin 
with soap and water. 



1 Appendix X1. Safety Requirements And Precautions, from ASTMD 2564-88 Solvent Cements tor Poly (Vinyl Chloride) (PVC) Plastic Pipe and 
Fittings is reprinted with permission from the American Society for Testing and Materials, 1916 Race St., Philadelphia, PA 19103, copyright. 

298 



CPVC SOLVENT CEMENTED HOT AND COLD 
WATER DISTRIBUTION SYSTEMS 

316.1.1.1 Selection. Follow the manufacturer's 
recommendations for type of solvent 
cements for such conditions as 
temperatures over 100°F (38°C), or 
humidity over 60%. 

316.1.1.2 Handling (to maintain effectiveness). 
Package solvent cement in containers 
no larger than 1 quart (1 liter). Keep 
solvent cement can closed and in the 
shade when not in use. Keep applicator 
submerged in solvent cement between 
applications. Discard solvent cement 
when it thickens appreciably or gels. 
Solvent cement shall not be thinned. 

316.1.1.3 Primer. A listed primer in compliance 
with ASTM F 656-93 shall be used on 
all CPVC solvent cemented joints. 

316.1.1.4 Size of Applicator. Applicator should 
be about one half the pipe diameter. Do 
not use small applicator on large pipes. 

316.1.2 Procedures 

Step 1. Cut pipe square with hand saw 
and mitre box, mechanical 
cutoff saw or tube cutter 
designed for plastic. 

Step 2. Ream and chamfer pipe (to 
eliminate sharp edges, beads 
and all burrs). 

Step 3. Clean all dirt, moisture and 
grease from pipe and fitting 
socket. Use a clean, dry rag. 

Step 4. Check dry fit of pipe in fittings. 
Pipe should enter fitting socket 
1/4 to 3/4 of socket depth. On 
larger sizes of Sch. 80 fittings, 
a looser fit may be expected. 
This is a normal condition, and 
requires care to apply an 
adequate amount of cement. 

StepS. Apply CPVC primer (see 
Section 316.1.1.1) to inside of 
fitting socket. Take care to 
avoid puddling. 

Step 6. Apply CPVC primer to outside 
surface of pipe to depth of 
fitting socket. 

Step 7. Wait until primer surface is 
tacky. DO NOT attempt to 
soften (dissolve) the surface as 
is required for PVC. 

Step 8. Apply a liberal coat of CPVC 
solvent cement to the outside 
surface of the pipe to the depth 
of the fitting socket. 

Step 9. Apply a light coat of CPVC 
solvent cement to inside of 



316.1.3 



316.1.4 



316.1.4.1 



316.1.4.2 



IS 20 

fitting socket. Apply a second 
liberal coat of cement to the 
pipe end. Take particular care 
in cementing larger sizes of 
Sch. 80 fittings. Be sure all 
surfaces are coated. 

Step 10. While both the inside socket 
surface and the outside surface 
of the pipe are WET with 
solvent cement, forcefully 
bottom the pipe in the socket, 
giving the pipe a quarter turn 
while inserting, if possible. 

Step 1 1 . Hold the joint together for 10 to 
15 seconds to assure that the 
pipe remains bottomed against 
the pipe stop. 

Step 12. Do not disturb the joint for at 
least 30 minutes. 
Note: The joint is weak until 
the cement is dry. If the joint is 
adjusted after it is set, the joint 
will be ruined. See Table 
316.1.2 for recommended set 
time. 

Step 13. Wipe excess cement from the 
pipe. A properly made joint will 
show a bead of cement around 
its entire perimeter. Any gaps 
may indicate insufficient 
cement. 

Step 14. The system shall not be 
pressurized until the joints 
have cured (set) at least as 
long as recommended by the 
manufacturer. If the manufac- 
turer's recommendation is not 
available, the following cure 
times are required. 

Prohibited Joints. Piping shall not be 

threaded. Female screwed fittings, with 

CPVC threads, shall be prohibited. 

Joints made with adhesives shall be 

prohibited. 

Threaded Joints. When threads are 

required, molded male adapters shall be 

used. 

Location. CPVC threaded joints shall 

be accessible. 

Lubricants. Only thread tape or thread 

lubricant approved specifically for use 

with CPVC shall be used. Conventional 

pipe thread compounds, putty, linseed 

oil based products, and unknown 

mixtures are prohibited. 



299 



IS 20 



UNIFORM PLUMBING CODE 



TABLE 31 6.1 .2 



Joint Cure Schedule 


Temperature 

Range of Pipe 

and Fittings 

during assembly 

and cure 


Minimum Joint 

Set Time, hrs. 

(Step 12) 


Minimum Cure Time 
before testing, 
hrs. (Step 14) 


Minimum Time 

before putting 

system into service 

at80psi/160°F 

(71 °C), hrs. 


Pipe Size 


1/2-1 in. 
(127-25.4 mm) 


1-1/4 -2 in. 
{32-51 mm) 


op OQ 

60-100 16-38 
40-60 4-16 


1/2 

1 


1 
2 


2 

4 


24 
48 



316.1.4.3 Tightening. Joints shall be tightened 609.1 
approximately 1-1/2 turns past hand 
tight. 

CAUTION: Hand tight refers to the 
number of threads to reach hand tight 
with metal pipe. Small sizes of CPVC 609.2 
can be bottomed by hand pressure 
alone. DO NOT overtighten. 

316.2 Special Joints 609.3 

316.2.1 Transition Joints. Transitions from 
CPVC tubing to metal piping and valves 
shall be made only with listed transition 
fittings suitable for that purpose. When 
required, the transition fittings shall be 
designed in such a manner that it can 
be anchored to a building member to 
prevent rotation. 

316.2.2 Soldering. Soldered metal joints shall 609.4 
not be made closer than 18 inches (457 

mm) to any already installed plastic to 
metal adapter in the same water line. 

316.2.3 Hose Bibbs. Hose bibbs shall be 
connected only to metal system 
components which are adequately 
anchored to the building structure. The 
CPVC plastic system shall terminate in 
wall. 

608.0 Water Hammer Arrestors and 
Pressure Relief Valves 

608.1 CPVC Piping. CPVC piping used for 
temperature and/or pressure relief valve 609.5 
drain lines shall be graded to the outlet 

end and shall be supported at 3 foot 
(914 mm) intervals both vertically and 
horizontally. 

608.2 Hammer Arrestor. An accessible listed 609.6 
water hammer arrestor shall be installed 
adjacent to each solenoid operated 

valve. 
609.0 Installation, Inspection and Testing 609.7 



Finish Nipples. Finish nipples shall be 
connected to drop ear elbows or other 
fittings listed for preventing rotation. 
Finish nipples shall not be CPVC but 
CPVC stub outs shall be permitted. 
Location. CPVC tubing shall not be 
installed so as to be subjected to direct 
sunlight after installation, and shall not be 
installed on the surface of the building. 
Water Heaters. There shall be a 
minimum of six (6) inches (152 mm) of 
metallic piping between a gas water 
heater connection and CPVC tubing. 
Piping shall not be installed down 
stream from any instantaneous type 
(coil or immersion) water heater or 
closer than six (6) inches (152 mm) 
developed length upstream. 
Under Slab. Pipe shall be installed in 
trench with uniform support and shall be 
bedded and covered with sand or other 
approved material to a depth of six (6) 
inches (152 mm). Pipe shall be stubbed 
up and all ends shall be capped. The 
system shall be filled with water and all 
air shall be bled off. The system shall 
be pressure tested to 150 psig (1034 
kPa) for a minimum of two (2) hours. All 
leaks shall be corrected. Foam pipe 
insulation shall be installed on all stub 
ups to prevent damage during concrete 
pour and finishing. 

Identification. A permanent sign with 
the legible words "This building has 
non-metallic interior water piping" shall 
be fastened on or inside the main 
electric service panel. 
Position of Marking. When installed, 
piping and fittings shall be positioned so 
that when practical, identifying markings 
shall be readily visible for inspection. 
Testing. Air testing is prohibited. 



300 



CPVC SOLVENT CEMENTED HOT AND COLD 
WATER DISTRIBUTION SYSTEMS 

610.0 Sizing 

610.1 Method. Piping shall be sized in 
accordance with UPC Section 610.0. 
When Appendix A is applicable, use 
Chart 610.1.1, 610.1.2 or 610.1.3 as 
appropriate. Flow velocities shall be 



IS 20 

limited to a maximum of 8 feet per 
second (2.4 mp/s). See Table 610.1. 

ADOPTED: 1982 

REVISED: 1984, 1985, 1989, 1990, 1991, 1992, 

1993,1995 



TABLE 610.1 
8 Feet per Second 



Pipe 


Pipe Sch. 40 


Pipe 


Sch. 80 


Tubing 


SDR 11 


Size 


GPM Ft.* FV** 


GPM 


Ft.* 


FV** 


GPM 


FT.* FV** 




FU FU 




FT 


FU 




FU FU 


1/2 


8 9- 


6 


7 


„ 


5 


6 


3/4 


13 19 


11 


15 


— 


10 


13 


1 


22 33 


18 


26 


- 


17 


24 


1-1/4 


37 74 5 


32 


55 


15 


25 


42 8 


1-1/2 


51 129 50 


44 


104 


36 


35 


66 20 


2 


81 295 170 


74 


245 


124 


59 


170 73 


*Flush Tank Fixture Units 




*■* 


'Flush Valve Fixture Units 



Table 610.1 (Metric) 
2.4 Meters per Second 



Pipe Pipe 


Sch. 40 


Pipe 


Sch. 80 


Tubing 


SDR 11 


Size Liter 


Ft.* FV** 


Liter 


Ft.* 


FV** 


Liter 


FT.* FV** 




FU FU 




FT 


FU 




FU FU 


12.7 30.3 


9 


22.7 


7 


— 


18.9 


6 


19.1 49.2 


19 


41.6 


15 


-- 


37.9 


13 


25.4 83.3 


33 


68.1 


26 


« 


64.3 


24 


32 140.0 


74 5 


121.1 


55 


15 


94.6 


42 8 


38 193.0 


129 50 


166.5 


104 


36 


132.5 


66 20 


51 306.6 


295 170 


280.1 


245 


124 


223.3 


170 73 


*Flush Tank Fixture Units 




*i 


'Flush Valve Fixture Units 



301 



IS 20 



UNIFORM PLUMBING CODE 



CHART 610.1.1 



Friction Loss in Lbs. per Sq. In. per 100 Ft. Run 

.7.8 1 2 3 4 5 6 7 8 10 20 30 40 50 60 80 1 00 



150 

100 

80 
70 
60 
50 
40 



Plastic SDR II 

Tubmg 
Very Smooth 

C%150 












































































































































































































































































































































ttf?^ 










































,»< 


^ 










































::.<^ 








































































































































\ 


v ir 








































^ 


s ^* 




V V 


p 






































a V ^ : 




















* 




































































L'st 






V 












. -i 


























\* 














































^L<5 


\ *+ 








jjA 






































& 






























































































£y 






























































































V 






































V ^ 












































































































































































































































































































































































^ 


k. 














































\ 














































\ 































.3 .4 .5 .6 .7 .8 1 2 3 4 5 6 7 8 10 20 30 40 50 60 80 100 

Friction Loss in Lbs. per Sq. In. per 100 Ft. Run 



302 



CPVC SOLVENT CEMENTED HOT AND COLD 
WATER DISTRIBUTION SYSTEMS 



IS 20 



CHART 61 0.1.2 



Friction Loss in Lbs. per Sq. In. per 100 Ft. Run 

.4 .5 .6 .7 .8 1 2 3 4 5 6 7 8 10 20 30 40 50 60 80 1 00 



150 


Sctod 40 IPS 

Plastic Pipe 

Very Smooth 

C = 150 


























































100 


























































































































RO 
































































70 
































































60 
























Tlad 




































50 
40 




















































































^ 


» 








































































































.10 














































































1 ^ 
















































20 
































































15 


















v^ 














































10 




















ffi 
























L<? 




















































































































































7 










































\ 






















6 






































i? 
























5 


































' 






























4 






















M 




































































\?~ 1 


































3 






















































































Vp 




f\ 






























































J 










































































A 






























10 












• 
























V 


\ 
































































r*. -- 
























0.7 








































ft, 
































































































































V 
























































































































































































































0? 

































































05 



4 £. 



.4 .5 .6 .7 .8 1 2 3 4 5 6 7 8 10 20 30 40 50 60 80 1 00 

Friction Loss in Lbs. per Sq. In. per 100 Ft. Run 



303 



IS 20 



UNIFORM PLUMBING CODE 



CHART 610.1.3 



Friction Loss in Lbs. per Sq. In. per 100 Ft. Run 

,3 A .5.6.7 .B 1 2 3 4 5 6 7 8 10 20 30 40 50 60 80 1 00 



O 

o 



Sched 


80 IPS 




















































Very Smooth 

c = tso 








































































































































































































































































































^ 










































































































































































































































































^ 














































































b^tf 




































\\* 


^P^C 
















v°* 










































































































F 




























































































































































N^X 




'iP 












































































































" ^ 


jl^ 






















































^ i 












































































































































































\l 


^ 
































































A 


















































































































? 
















































































































Vi 
























































L 


& 





























































































































































































0.8 
0.7 
0.6 
0.5 



.3 .4 .5 .6 .7 .8 1 2 3 4 5 6 7 8 10 20 30 40 SO 60 80 1 00 

Friction Loss in Lbs. per Sq. In. per 100 Ft Run 



6 5 
4 £ 



304 



Installation Standard 

For 

WELDED COPPER AND COPPER ALLOY WATER TUBE 

IAPMO IS 21-89 



This standard shall govern the installation of 
welded copper and copper alloy water tube in 
potable hot and cold water systems. Installation, 
material and inspection shall comply with the current 
edition of the UPC published by the International 
Association of Plumbing and Mechanical Officials 
and this standard. 

Note: The following sections of the Uniform 
Plumbing Code apply to welded copper and copper 
alloy water tube. 

Table 14-1 Standards 

ANSI B 16.18-84 Cast Copper Alloy Solder-Joint 
Pressure 
Fittings 



ANSI B 1 6.22-95 Wrought Copper and Copper 




Alloy Solder Joint Pressure 




Fittings 


ASTM B 447-93 


Standard Specification for 




Welded Copper Tube 


ASTM B 642-88e1 Welded Copper Alloy UNS 




No.C21000 Water Tube 


301.1 


Minimum Standards 


903.2 


Use of Copper Tubing 


811.1 


Chemical or Industrial Waste 


604.2 


Water piping 


604.3 


Marking of Tubing 


604.4 


Flexible Water Connectors 


310.0 


Workmanship 


311.0 


Prohibited fittings and practices 


313.0 


Protection of Piping, Materials and 




Structures 


314.0 


Hangers and Supports Vertical 




Plumbing 


314.0 


Hangers and Supports Horizontal 




Plumbing 


314.0 


Hangers and Anchors 


103.5.3 


Test 


316.1 


Types of Joints 


316.1.2 


Wiped Joints 


316.1.3 


Solder and Sweat Joints 


606.1.1 


Flared Joints 


606.2.1 


Use of Joints, Copper Water Tube 


316.2 


Special Joints 


316.2.1 


Copper Tubing to Screw Pipe 




Joints 


705.3.3 


Ground Joint, Flared or Ferrule 




Connections 


317.0 


Increasers and Reducers 



Chapter 6 Water Distribution 

604.0 Materials 

604.1 Materials, Water Pipe and Fittings 
604.7 Restriction of Used Piping 
608.0 Relief Valve Drains 

609.0 Installation, Inspection, and 

Testing 

610.0 Size of Portable Water Piping 

Appendix A Chart A-4 Friction Loss 

301.1 Minimum Standards 

301.1.1 Materials. Materials shall comply with the 
appropriate standard in Table 14-1 of the 
UPC. 

Note: The nominal or standard size of 
copper and copper alloy welded water 
tube is always 0. 125 inch (3.8 mm) or 1/8 
inch (3.8 mm) smaller than the actual 
outside diameter dimension of the tube. 
For example, 3 inch (76 mm) nominal size 
copper plumbing, tube measures 3-1/8 
inch (79.2 mm) O.D., 1/2 inch (12.7 mm) 
nominal size copper plumbing tube 
measures 5/8 inch (15.9 mm) O.D., etc. 

903.2 Use of Copper Tubing 

903.2.1 Markings. Markings shall be visible for 
inspection. 

903.2.1.1 Water tube shall bear the following incised 
marked at not over 18 inch (457 mm) 
intervals: 

(a) Manufacturer's name or trademark; 

(b) Tube Type; and 

(c) Country of origin. 

903.2.1.2 All hard drawn tube shall be identified 
throughout its entire length by a colored 
marking not less than 3/16 inch in height, 
including legend repeated at intervals not 
greater than 3 feet (914 mm). The legend 
shall include the type of tube, welded, 
ASTM specification, name or trademark of 
the manufacturer or both, and the country 
of origin. 

(a) Tube listed by IAPMO that is covered 
by this standard shall be labeled with 
the designated IAPMO certification 
mark to show compliance with this 
standard. 



305 



IS 21 



UNIFORM PLUMBING CODE 



316.1 Joints 

316.1.1 General Information. Copper tube and 
fittings maybe joined in a number of ways, 
depending on the purpose of the system. 
Soldering and brazing with capillary 
fittings are the methods used most. 
The American Welding Society defines 
soldering as a joining process which takes 
place below 840°F (449°C) and brazing as 
a similar process which occurs above 
840°F (449°C) but below the melting point 
of the base metals. In actual practice for 
copper systems, most soldering is done at 
temperatures ranging from about 350°F to 
550°F (177° to 288°C), while most brazing 
is done at temperatures ranging from 
1100° F to 1500°F (593°C to 816°C). The 
choice between soldering or brazing will 
generally depend on operating conditions. 
Solder joints are generally used where the 
service temperature does not exceed 
205°F (96°C), while brazed joints can be 
used where greater strength is required, 
or where system temperatures are as high 
as 400°F (204°C). 

316.1.1.1 Fittings for Soldered, Brazed, and 
Flared Joints. Fittings are available in all 
standard tube sizes and in a wide variety 
of types to cover needs for plumbing. 
They can be either soldered or brazed, 
although brazing cast fittings requires 
care. Wrought copper pressure fittings are 
also available over a wide range of sizes 
and types. These, too, can be joined by 
either soldering or brazing and wrought 
fittings are preferred where brazing is the 
joining method. Otherwise, the choice 
between cast and wrought fittings is 
largely a matter of the user's preference. 
Flared-tube fittings provide metal-to-metal 
contact similar to ground joint unions; both 
can be easily taken apart and 
reassembled. They are especially useful 
where residual water cannot be removed 
from the tube and soldering is difficult. 
Flared joints may be required where a fire 
hazard exists and the use of a torch to 
make soldered or brazed joints is not 
allowed. 

316.1.1.2 Solders 

Note: Users of the Uniform Plumbing 
Codes are reminded that provisions of the 
Federal Clean Drinking Act of 1986, which 
all must obey, forbid the use of solder 
which contains in excess of 0.2% of lead, 
by weight in potable water systems. The 



provisions of the act are incorporated in all 
ordinances, statutes, state and municipal 
regulations by reference and by operation 
of law. 

The selection of a solder depends on the 
operating pressure and temperature of the 
line. Consideration should also be given to 
the stresses on the joint caused by 
thermal expansion and contraction. 
However, stresses due to temperature 
changes should not be significant in two 
commonly encountered cases: when tube 
lengths are short, or when expansion 
loops are used in long tube runs. 
Solder is generally used in wire form, but 
paste-type solders are also available. These 
are finely granulated solders in suspension in 
a paste flux. When using paste-type solders, 
observe these four rules: 

1. Wire solder must be applied in 
addition to the paste to fill the voids 
and assists in displacing the flux, 
otherwise the surfaces may be well 
"tinned" and yet there may not be a 
good joint with a continuous bond. 

2. The paste mixture must be thoroughly 
stirred if it has been standing in the 
can for more than a very short time, 
as the solder has a tendency to settle 
rapidly to the bottom. 

3. The flux cannot be depended on to 
clean the tube. Cleaning should be 
done manually as is recommended 
for any other flux and solder. 

4. Remove any excess flux. 

Solders are available containing small 
amounts of silver or other additives to 
impart special properties. Such solders 
may require special fluxes. The 
manufacturer's recommendations should 
be consulted regarding proper procedures 
and fluxes for such solders and about the 
expected properties. 
316.1.1.3 Soldering Flux 

The functions of the soldering flux are to 
remove residual traces of oxides, to 
promote wetting and to protect the 
surfaces to be soldered from oxidation 
during heating. The flux should be applied 
to clean surfaces and only enough should 
be used to lightly coat the areas to be 
joined. 

An oxide film may reform quickly on 
copper after it has been cleaned. 
Therefore, the flux should be applied as 
soon as possible after cleaning. 



306 



WELDED COPPER AND COPPER ALLOY WATER TUBE 



IS 21 



CAUTION 

Careless workmanship, especially during 
flux applications, can result in corrosion of 
the tube long after the system has been 
installed. If excessive flux is used, the 
residue inside the tube can cause 
corrosion. In an extreme case, such 
residual flux can actually lead to 
perforation through the tubewall causing 
leakage. To guard against this danger, it 
is important (1) to choose a flux that is not 
too corrosive, and (2) to use only the 
minimum amount actually needed to 
make the joint. 
316.1.2 Solder Joints 

Soldering and brazing both involve basic 
steps, which must be executed with care 
and craftsmanship. The steps are: 

(1) Measuring 

(2) Cutting 

(3) Reaming 

(4) Cleaning 

(5) Fluxing 

(6) Assembly and Support 

(7) Heating 

(8) Applying the filler metal 

(9) Cooling and cleaning 

Each step contributes to a strong, 
dependable joint. 

316.1.2.1 Measuring 

Measuring the length of each tube 
segment must be accurate. Inaccuracy 
can compromise joint quality. If the tube is 
too short it will not reach all the way into 
the socket of the fitting and a proper joint 
cannot be made. If the tube segment is 
too long, there is danger of cocking the 
tube in the fitting and putting strain on the 
system which could affect service life. 

316.1.2.2 Cutting 

Once the tube is measured it can be cut. 
Cutting can be accomplished in a number 
of different ways to produce a satisfactory 
square end. The tube can be cut with a 
disc-type tube cutter, a hacksaw, an 
abrasive wheel, or with a stationary or 
portable bandsaw. Care must be taken 
that the tube is not deformed while being 
cut. Regardless of method, the cut must 
be square with the run of the tube so that 
the tube will seat properly in the fitting 
socket. 

316.1.2.3 Reaming 

All pipe and tube shall be reamed to the 

full I.D. of the pipe and tube. 

Tools used to ream tube ends include the 



reaming blade on the tube cutter, half- 
round or round files, a pocket knife and a 
suitable deburring tool. With annealed 
tube, care must be taken not to deform the 
tube end by applying too much pressure. 
Both the inside and the outside of the tube 
may require removal of the burr. 

316.1.2.4 Cleaning 

The removal of oxides and surface soil is 
crucial if filler metal is to flow properly into 
the joint. Unremoved oxide, surface soil 
and oil can interfere with the strength of 
the joint and cause failure. 
Mechanical cleaning is a simple operation. 
The end of the tube should be abraded 
lightly using sand cloth or nylon abrasive 
pads for a distance only slightly more than 
the depth of the fitting socket. The socket 
of the fitting should also be cleaned using 
sand cloth, abrasive pads, or a properly 
sized fitting brush. 

Copper is a relatively soft metal. If too 
much material is removed, a loose fit will 
result and interfere with satisfactory 
capillary action in making the joint. The 
capillary space between the tube and 
fitting is approximately 0.004 inch (0.1 
mm). Solder or brazing filler metal can fill 
this gap by capillary action. This spacing 
is critical for the filler metal to flow into the 
gap and form a strong joint. 
Surfaces, once cleaned, should not be 
touched with bare hands or oily gloves. 
Skin oils, lubricating oils and grease 
impair solder flow and wetting. 

316.1.2.5 Fluxing 

Stir the flux before use. A good flux will 
dissolve and remove traces of oxide from 
the cleaned surfaces to be joined, protect 
the cleaned surfaces from reoxidation 
during heating and promote wetting of the 
surfaces by the solder. A thin, even 
coating of flux should be applied with a 
brush to both tube and fitting. Do not apply 
with fingers. Chemicals in the flux can be 
harmful if carried to the eyes or open cuts. 

316.1.2.6 Assembly and Support 

After both tube and fitting surfaces are 
properly fluxed, they should be 
assembled, making sure the tube seats 
against the base of the fitting socket. A 
slight twisting motion ensures even 
distribution by the flux. Remove excess 
flux. Care must be taken to assure that the 
tube and fittings are property supported 
with a uniform capillary space around the 



307 



IS 21 



UNIFORM PLUMBING CODE 



entire circumference of the joint. 
Uniformity of capillary space will ensure 
good filler metal penetration if the 
guidelines of successful joint making are 
followed. Excessive joint clearance can 
cause the filler metal to crack under stress 
or vibration. 

The joint is now ready for soldering. Joints 
prepared and ready for soldering should 
be completed the same day and not left 
unfinished overnight. 

316.1.2.7 Heating 

Because an open flame may be used for 
soldering, and because flammable gases 
are used, safety precautions must be 
observed. The heat is generally applied 
using an air/fuel torch. Such torches use 
acetylene or an LP gas. Electric 
resistance tools can also be used. 
Heating should begin with the flame 
perpendicular to the tube. The copper 
tube conducts the initial heat into the 
fitting socket for even distribution of heat 
inside and out. The extent of this 
preheating depends upon the size of the 
joint. Experience will indicate the amount 
of time needed. The flame should now be 
moved onto the fitting. Then move the 
flame from the fitting socket back onto the 
tube a distance equal to the depth of the 
fitting socket. Touch the solder to the joint. 
If the solder does not melt, remove it and 
continue the heating process. Be careful 
not to overheat or to direct the flame into 
the fitting cup. This could cause the flux to 
burn and destroy its effectiveness. When 
the melting temperature of the solder has 
been reached, heat may be applied to the 
base of the cup to aid capillary action in 
drawing the solder into the cup. 

316.1.2.8 Applying the Filler Metal 

For tube in a horizontal position, start 
applying the solder slightly off-center at 
the bottom of the joint. Proceed across the 
bottom of the fitting and up to the top 
center position. Return to the point of 
beginning, overlap the starting point, and 
then proceed up the incompleted side to 
the top, again, overlapping the solder. 
For joints in the vertical position, a similar 
sequence of overlapping passes should 
be made, starting wherever is convenient. 
Molten solder will be drawn into the joint 
by capillary action regardless of whether 
the solder is being fed upward, downward 
or horizontally. 



316.1.2.9 Cooling and Cleaning 

After the joint has been completed, natural 
cooling is best. Shock cooling with water 
may cause unnecessary stress on the 
joint and result in eventual failure. When 
cool, clean off any remaining flux with a 
wet rag. 
316.1.3 Brazed Joints 

Brazing is the second most commonly 
used method for joining copper tube. 
Making brazed joints is similar to making 
soldered joints with respect to measuring, 
cutting, reaming, cleaning, assembly and 
support. And as in soldering, the brazing 
filler metal is melted by the heat of the 
tube and fitting and drawn into the joint by 
capillary action. 

The major differences between soldering 
and brazing are the: 

• Type of flux used, 

• Composition of filler metal, and 

• Amount of heat required to melt the filler 
metal. 

316.1.3.1 Brazing Flux 

The fluxes used for brazing copper joints 
are different in composition from soldering 
fluxes. The two types cannot be used 
interchangeably. Brazing fluxes are water 
based, whereas most soldering fluxes are 
petroleum based. Similar to soldering 
fluxes, brazing fluxes dissolve and remove 
residual oxide from the metal surface, 
protect the metal from reoxidation during 
heating and promote wetting of the 
surfaces to be joined by the brazing filler 
metal. 

Fluxes also provide the draftsman with an 
indication of temperature. Application of 
the flux is the same as when soldering. If 
the outside of the fitting and the heat- 
affected area of the tube are covered with 
flux (in addition to the end of the tube and 
the cup), oxidation will be prevented and 
the appearance of the joint will be greatly 
improved. 

316.1.3.2 Brazing Filler Metals 

There are two general types of brazing 
filler metal used for joining copper tube. 
Classified according to their components, 
they are: BCuP (Brazing-Copper- 
Phosphorous) and BAg (Brazing-Silver). 
BCuP filler metals are preferred for joining 
copper tube and fittings. The phosphorous 
in them acts as a fluxing agent and the 
lower percentage of silver makes them 
relatively low cost. When using copper 



308 



WELDED COPPER AND COPPER ALLOY WATER TUBE 



IS 21 



tube, wrought copper fittings and BCuP 606.0 
brazing filler metal, fluxing is optional. 606.1 
However, when cast fittings are brazed, 
flux must be used. 

316.1.3.3 Heating 

Oxy/fuel torches are generally used for 
brazing because of the higher 
temperatures required. 
Recent innovations in tip design make 
air/fuel torches useful on a wider range of 
sizes for brazing. 

When working at brazing temperatures, 
safety precautions must be followed and 
care taken to protect both the operator 
and the materials being used. 
The heating operation is the same as for 
soldering. First preheat the tube and then 
the tube and fitting. When the filler metal 
starts to melt, apply heat at the base of 
the fitting socket to help draw the brazing 
filler metal in by capillary action. 

316.1.3.4 Applying Brazing Filler Metal 
Remember to allow the heat of th